How to resolve "System extension cannot be used" error.

When I start and from time to time I get this error message (more frequently now as I type this SOS message!).

Open the AppleScript Editor in the /Applications/Utilities/ folder and run the following:
do shell script "chown -R root:wheel /System/Library/Extensions/AppleUSBEthernetHost.kext" with administrator privileges
You may then need to restart the computer.
(113253)

Similar Messages

Re: System Extension Cannot Be Used Error Window

hello all:)))
like many who have installed snow leopard, i've got a problem printing. i can't!
i check it out online and saw on apple that i could install the 'optional installs.mpkg' from the Snow Leopard DVD and my hp d1560 printer should work.
so i did this, and when i get to 3 minutes installing time, whilst installing the Printers install, I get the following window pooping up:
" System Extension Cannot be Used" ;
The System externsion "/System/Library/Extension/CNQL1213_ClassicNotSeize.kext" was installed improperly and cannot be used. Please try reinstalling it, or contact the product vendor for an update.
This windows keeps then popping up.
Somebody please help! Just wanna print!!!!!!
Rik:))))

howdy john!
had a read through, woudl it help if i posted the error messages that appears once i do try and print? i managed to download now successfully the hp drivers as found on the apple website.
when i tried to print, the exact same thing happened as in the post, it was dropped and displayed this mass of stuff!!!:
Process: Deskjet [73854]
Path: /Library/Printers/hp/cups/Deskjet.driver/Contents/MacOS/Deskjet
Identifier: Deskjet
Version: ??? (???)
Code Type: X86-64 (Native)
Parent Process: cupsd [1124]
Date/Time: 2009-09-01 19:05:42.482 +0100
OS Version: Mac OS X 10.6 (10A432)
Report Version: 6
Anonymous UUID: 7FD704D7-1692-4622-9F63-C6181725CD51
Exception Type: EXCBADACCESS (SIGSEGV)
Exception Codes: KERNINVALIDADDRESS at 0x0000000000000000
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Thread 0 Crashed: Dispatch queue: com.apple.main-thread
0 ...p.print.cups.filter.deskjet 0x000000010000bf89 comhp_cups_deskjet_util_30::AHPString::operator+=(char const*) + 10099
1 ...p.print.cups.filter.deskjet 0x000000010000c089 comhp_cups_deskjet_util_30::AHPString::operator+=(char const*) + 10355
2 ...p.print.cups.filter.deskjet 0x000000010000e457 comhp_cups_deskjet_util_30::AHPString::operator+=(char const*) + 19521
3 ...p.print.cups.filter.deskjet 0x000000010000fb5f comhp_cups_deskjet_util_30::AHPString::operator+=(char const*) + 25417
4 ...p.print.cups.filter.deskjet 0x0000000100019ab6 comhp_cups_deskjet_util_3_0::AHPString::operator=(_CFString const*) + 30778
5 ...p.print.cups.filter.deskjet 0x000000010000a28b comhp_cups_deskjet_util_30::AHPString::operator+=(char const*) + 2677
6 ...p.print.cups.filter.deskjet 0x000000010000a611 comhp_cups_deskjet_util_30::AHPString::operator+=(char const*) + 3579
7 ...p.print.cups.filter.deskjet 0x0000000100000f84 0x100000000 + 3972
Thread 1:
0 libSystem.B.dylib 0x00007fff80b1c4e6 read + 10
1 ...p.print.cups.filter.deskjet 0x000000010001a24e comhp_cups_deskjet_util_3_0::AHPString::operator=(_CFString const*) + 32722
2 libSystem.B.dylib 0x00007fff80b4b06e pthreadstart + 331
3 libSystem.B.dylib 0x00007fff80b4af21 thread_start + 13
Thread 2: Dispatch queue: com.apple.libdispatch-manager
0 libSystem.B.dylib 0x00007fff80b2ac7e kevent + 10
1 libSystem.B.dylib 0x00007fff80b2cb55 dispatch_mgrinvoke + 154
2 libSystem.B.dylib 0x00007fff80b2c824 dispatch_queueinvoke + 185
3 libSystem.B.dylib 0x00007fff80b2c34e dispatch_workerthread2 + 244
4 libSystem.B.dylib 0x00007fff80b2bc80 pthreadwqthread + 353
5 libSystem.B.dylib 0x00007fff80b2bb1d start_wqthread + 13
Thread 3:
0 libSystem.B.dylib 0x00007fff80b2baa2 _workqkernreturn + 10
1 libSystem.B.dylib 0x00007fff80b2beb4 pthreadwqthread + 917
2 libSystem.B.dylib 0x00007fff80b2bb1d start_wqthread + 13
Thread 0 crashed with X86 Thread State (64-bit):
rax: 0x0000000000000001 rbx: 0x0000000100827a00 rcx: 0x00007fff700d05d0 rdx: 0x00000000000fc080
rdi: 0x0000000100432a00 rsi: 0x0000000100500000 rbp: 0x00007fff5fbfe790 rsp: 0x00007fff5fbfe5a0
r8: 0x0000000000000000 r9: 0x0000000100514b30 r10: 0x0000000000000000 r11: 0x0000000000000002
r12: 0x00007fff5fbfe730 r13: 0x0000000000000000 r14: 0x0000000100827a00 r15: 0x0000000100512ea0
rip: 0x000000010000bf89 rfl: 0x0000000000010206 cr2: 0x0000000000000000
Binary Images:
0x100000000 - 0x1001eafe7 +com.hp.print.cups.filter.deskjet 3.0 (3.0f07) <2B4766FF-7457-3E8C-1240-436C467FA9C6> /Library/Printers/hp/cups/Deskjet.driver/Contents/MacOS/Deskjet
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0x7fff8123b000 - 0x7fff8126cfff libGLImage.dylib ??? (???) <4F318A3E-20C1-D846-2B36-62451A3241F7> /System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGLImage.dyl ib
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0x7fff813d6000 - 0x7fff81491ff7 libFontParser.dylib ??? (???) <8926E1B0-6D1E-502A-5028-1DCC57F6D6FA> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ ATS.framework/Versions/A/Resources/libFontParser.dylib
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0x7fff81b50000 - 0x7fff81b63fff libGL.dylib ??? (???) <D452ADC0-04B1-E24F-03E6-717E58E1D659> /System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib
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0x7fff81c0f000 - 0x7fff81c6bfff libGLU.dylib ??? (???) <AA2D37B3-8B7C-6772-F8BA-7364284C55FE> /System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGLU.dylib
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0x7fff8542d000 - 0x7fff85432fff libGIF.dylib ??? (???) <0C112067-95FE-B9BC-C70C-64A46A277F34> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ ImageIO.framework/Versions/A/Resources/libGIF.dylib
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0x7fff85d04000 - 0x7fff85ebefef com.apple.ImageIO.framework 3.0.0 (3.0.0) <D5594E10-F805-F816-10E9-F95753BE18CC> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ ImageIO.framework/Versions/A/ImageIO
0x7fff85ebf000 - 0x7fff85ec5ff7 com.apple.DiskArbitration 2.3 (2.3) <857F6E43-1EF4-7D53-351B-10DE0A8F992A> /System/Library/Frameworks/DiskArbitration.framework/Versions/A/DiskArbitration
0x7fff85f59000 - 0x7fff85fa3ff7 com.apple.Metadata 10.6.0 (507.1) <AA0DF8E0-9B5B-2377-9B20-884919E28994> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/Metadat a.framework/Versions/A/Metadata
0x7fff86010000 - 0x7fff86453fef libLAPACK.dylib ??? (???) <0CC61C98-FF51-67B3-F3D8-C5E430C201A9> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.fr amework/Versions/A/libLAPACK.dylib
0x7fff8656f000 - 0x7fff865fffff com.apple.SearchKit 1.3.0 (1.3.0) <4175DC31-1506-228A-08FD-C704AC9DF642> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/SearchK it.framework/Versions/A/SearchKit
0x7fff86600000 - 0x7fff86600ff7 com.apple.CoreServices 44 (44) <210A4C56-BECB-E3E4-B6EE-7EC53E02265D> /System/Library/Frameworks/CoreServices.framework/Versions/A/CoreServices
0x7fff86625000 - 0x7fff8663bfef libbsm.0.dylib ??? (???) <42D3023A-A1F7-4121-6417-FCC6B51B3E90> /usr/lib/libbsm.0.dylib
0x7fff87262000 - 0x7fff87286ff7 com.apple.CoreVideo 1.6.0 (43.0) <FF5F0EEF-56BE-24DD-C8FA-CB41F126E6A8> /System/Library/Frameworks/CoreVideo.framework/Versions/A/CoreVideo
0x7fff87287000 - 0x7fff87292ff7 com.apple.speech.recognition.framework 3.10.10 (3.10.10) <7E2A89FC-0F18-1CCC-472E-AD0E2BC2DD4C> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/SpeechRecogni tion.framework/Versions/A/SpeechRecognition
0x7fff87293000 - 0x7fff87514fe7 com.apple.Foundation 6.6 (751) <CCE98C5C-DFEA-6C80-A014-A5985437072E> /System/Library/Frameworks/Foundation.framework/Versions/C/Foundation
0x7fff87549000 - 0x7fff875a6fef com.apple.framework.IOKit 2.0 (???) <65AA6170-12E3-BFB5-F982-E0C433610A1F> /System/Library/Frameworks/IOKit.framework/Versions/A/IOKit
0x7fff875a7000 - 0x7fff875cffff com.apple.DictionaryServices 1.1 (1.1) <D57BA55A-4CC5-5C17-8077-AEEA27A01C7A> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/Diction aryServices.framework/Versions/A/DictionaryServices
0x7fff875f1000 - 0x7fff87607fff com.apple.MultitouchSupport.framework 200.20 (200.20) <96B8C66E-D84D-863B-CB1D-F7E005569706> /System/Library/PrivateFrameworks/MultitouchSupport.framework/Versions/A/Multit ouchSupport
0x7fff8761a000 - 0x7fff8761cfff com.apple.print.framework.Print 6.0 (237) <70DA9755-5DC1-716B-77E2-E42C5DAB85A2> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/Print.framewo rk/Versions/A/Print
0x7fff87652000 - 0x7fff8770bfff libsqlite3.dylib ??? (???) <5A15E12A-AE8F-1A36-BBC7-564E7D7AD0FB> /usr/lib/libsqlite3.dylib
0x7fff8770c000 - 0x7fff87761fef com.apple.framework.familycontrols 2.0 (2.0) <2520A455-5487-1964-C5D9-D284699D2537> /System/Library/PrivateFrameworks/FamilyControls.framework/Versions/A/FamilyCon trols
0x7fff87762000 - 0x7fff87816fef com.apple.ColorSync 4.6.0 (4.6.0) <080BEDDE-E7A4-F88D-928B-7501574A157B> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ ColorSync.framework/Versions/A/ColorSync
0x7fff87b8c000 - 0x7fff87d49fff libicucore.A.dylib ??? (???) <224721C0-EC21-94D0-6484-66C603C34CBE> /usr/lib/libicucore.A.dylib
0x7fff87d4a000 - 0x7fff87d97ff7 libauto.dylib ??? (???) <8658DB85-C611-1212-44E5-5B2539018FA0> /usr/lib/libauto.dylib
0x7fff87d98000 - 0x7fff87d98ff7 com.apple.vecLib 3.5 (vecLib 3.5) <5B072584-9579-F54F-180E-5D425B37E85C> /System/Library/Frameworks/vecLib.framework/Versions/A/vecLib
0x7fff87d9b000 - 0x7fff87db0fff com.apple.LangAnalysis 1.6.5 (1.6.5) <D4956302-5A2D-2AFD-C143-6287F1313196> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ LangAnalysis.framework/Versions/A/LangAnalysis
0x7fff8800a000 - 0x7fff88018ff7 libkxld.dylib ??? (???) <823B6BE6-E952-3B3C-3633-8F4D6C4606A8> /usr/lib/system/libkxld.dylib
0x7fff88040000 - 0x7fff88145fe7 libGLProgrammability.dylib ??? (???) <EDEC71CB-5F5B-7F55-47F4-19E953E3BE61> /System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGLProgramma bility.dylib
0x7fff88146000 - 0x7fff881cafff com.apple.print.framework.PrintCore 6.0 (312) <1F747E69-924D-8C5B-F318-C4828CC6E85D> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ PrintCore.framework/Versions/A/PrintCore
0x7fff88200000 - 0x7fff88207fff com.apple.OpenDirectory 10.6 (10.6) <72A65D76-7831-D31E-F1B3-9E48BF26A98B> /System/Library/Frameworks/OpenDirectory.framework/Versions/A/OpenDirectory
0x7fff88ae3000 - 0x7fff88b34fe7 com.apple.HIServices 1.8.0 (???) <113EEB8A-8EC6-9F86-EF46-4BA5C2CBF77C> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ HIServices.framework/Versions/A/HIServices
0x7fffffe00000 - 0x7fffffe01fff libSystem.B.dylib ??? (???) <1AABDC4B-CBAE-F40C-405C-DAE785959F57> /usr/lib/libSystem.B.dylib
E [01/Sep/2009:19:05:43 +0100] [Job 5] Job stopped due to filter errors; please consult the error_log file for details.
D [01/Sep/2009:19:05:43 +0100] [Job 5] The following messages were recorded from 19:05:41 to 19:05:43
D [01/Sep/2009:19:05:43 +0100] [Job 5] Adding start banner page "none".
D [01/Sep/2009:19:05:43 +0100] [Job 5] Queued on "HPDeskjet_D1500series" by "rikinkecskesparekh".
D [01/Sep/2009:19:05:43 +0100] [Job 5] File of type application/pdf queued by "rikinkecskesparekh".
D [01/Sep/2009:19:05:43 +0100] [Job 5] Setting job-hold-until to no-hold
D [01/Sep/2009:19:05:43 +0100] [Job 5] Adding end banner page "none".
D [01/Sep/2009:19:05:43 +0100] [Job 5] Job released by user.
D [01/Sep/2009:19:05:43 +0100] [Job 5] job-sheets=none,none
D [01/Sep/2009:19:05:43 +0100] [Job 5] argv[0]="HPDeskjet_D1500series"
D [01/Sep/2009:19:05:43 +0100] [Job 5] argv[1]="5"
D [01/Sep/2009:19:05:43 +0100] [Job 5] argv[2]="rikinkecskesparekh"
D [01/Sep/2009:19:05:43 +0100] [Job 5] argv[3]="Publishing Contract - Rikin Parekh - Crackley Moor.pdf"
D [01/Sep/2009:19:05:43 +0100] [Job 5] argv[4]="1"
D [01/Sep/2009:19:05:43 +0100] [Job 5] argv[5]="APColorMatchingMode=APVendorColorMatching APDInputSlot= nocollate com.apple.print.DocumentTicket.PMSpoolFormat=application/pdf com.apple.print.JobInfo.PMApplicationName=Preview com.apple.print.JobInfo.PMJobName=Publishing\ Contract\ -\ Rikin\ Parekh\ -\ Crackley\ Moor.pdf com.apple.print.JobInfo.PMJobOwner=RIKIN\ PAREKH com.apple.print.PageToPaperMappingMediaName=A4 com.apple.print.PageToPaperMappingType..n.=1 com.apple.print.PrinterInfo.PMColorDeviceID..n.=25334 com.apple.print.PrintSettings.PMColorSpaceModel..n.=2 com.apple.print.PrintSettings.PMColorSyncProfileID..n.=836 com.apple.print.PrintSettings.PMCopies..n.=1 com.apple.print.PrintSettings.PMCopyCollate..b. com.apple.print.PrintSettings.PMDestinationType..n.=1 com.apple.print.PrintSettings.PMFirstPage..n.=1 com.apple.print.PrintSettings.PMLastPage..n.=2147483647 com.apple.print.PrintSettings.PMPageRange..a.0..n.=1 com.apple.print.PrintSettings.PMPageRange..a.1..n.=2147483647 DestinationPrinterID=HPDeskjet_D1500series media=A4 PaperInfoIsSuggested..b. noPDFIsProtected..b. pserrorhandler-requested=standard job-uuid=urn:uuid:fa60b87f-3b88-3744-541c-2f8e2cd8c0da job-originating-host-name=localhost job-impressions=6 com.apple.print.PrintSettings.PMTotalSidesImaged..n.=6 com.apple.print.PrintSettings.PMTotalBeginPages..n.=6"
D [01/Sep/2009:19:05:43 +0100] [Job 5] argv[6]="/private/var/spool/cups/d00005-001"
D [01/Sep/2009:19:05:43 +0100] [Job 5] envp[0]="<CFProcessPath>"
D [01/Sep/2009:19:05:43 +0100] [Job 5] envp[1]="CUPS_CACHEDIR=/private/var/spool/cups/cache"
D [01/Sep/2009:19:05:43 +0100] [Job 5] envp[2]="CUPS_DATADIR=/usr/share/cups"
D [01/Sep/2009:19:05:43 +0100] [Job 5] envp[3]="CUPS_DOCROOT=/usr/share/doc/cups"
D [01/Sep/2009:19:05:43 +0100] [Job 5] envp[4]="CUPS_FONTPATH=/usr/share/cups/fonts"
D [01/Sep/2009:19:05:43 +0100] [Job 5] envp[5]="CUPS_REQUESTROOT=/private/var/spool/cups"
D [01/Sep/2009:19:05:43 +0100] [Job 5] envp[6]="CUPS_SERVERBIN=/usr/libexec/cups"
D [01/Sep/2009:19:05:43 +0100] [Job 5] envp[7]="CUPS_SERVERROOT=/private/etc/cups"
D [01/Sep/2009:19:05:43 +0100] [Job 5] envp[8]="CUPS_STATEDIR=/private/etc/cups"
D [01/Sep/2009:19:05:43 +0100] [Job 5] envp[9]="HOME=/private/var/spool/cups/tmp"
D [01/Sep/2009:19:05:43 +0100] [Job 5] envp[10]="PATH=/usr/libexec/cups/filter:/usr/bin:/usr/sbin:/bin:/usr/bin"
D [01/Sep/2009:19:05:43 +0100] [Job 5] envp[11]="SERVER_ADMIN=root@cpc1-finc11-0-0-cust27.4-2.cable.virginmedia.com"
D [01/Sep/2009:19:05:43 +0100] [Job 5] envp[12]="SOFTWARE=CUPS/1.4.0"
D [01/Sep/2009:19:05:43 +0100] [Job 5] envp[13]="TMPDIR=/private/var/spool/cups/tmp"
D [01/Sep/2009:19:05:43 +0100] [Job 5] envp[14]="USER=root"
D [01/Sep/2009:19:05:43 +0100] [Job 5] envp[15]="CUPS_SERVER=/private/var/run/cupsd"
D [01/Sep/2009:19:05:43 +0100] [Job 5] envp[16]="CUPS_ENCRYPTION=IfRequested"
D [01/Sep/2009:19:05:43 +0100] [Job 5] envp[17]="IPP_PORT=631"
D [01/Sep/2009:19:05:43 +0100] [Job 5] envp[18]="CHARSET=utf-8"
D [01/Sep/2009:19:05:43 +0100] [Job 5] envp[19]="LANG=en_US.UTF-8"
D [01/Sep/2009:19:05:43 +0100] [Job 5] envp[20]="APPLE_LANGUAGE=en-US"
D [01/Sep/2009:19:05:43 +0100] [Job 5] envp[21]="PPD=/private/etc/cups/ppd/HPDeskjet_D1500series.ppd"
D [01/Sep/2009:19:05:43 +0100] [Job 5] envp[22]="RIPMAXCACHE=8m"
D [01/Sep/2009:19:05:43 +0100] [Job 5] envp[23]="CONTENT_TYPE=application/pdf"
D [01/Sep/2009:19:05:43 +0100] [Job 5] envp[24]="DEVICE_URI=usb://HP/Deskjet%20D1500%20series?serial=TH87T341SR058V"
D [01/Sep/2009:19:05:43 +0100] [Job 5] envp[25]="PRINTER_INFO=HP Deskjet D1500 series"
D [01/Sep/2009:19:05:43 +0100] [Job 5] envp[26]="PRINTER_LOCATION=RIKIN KECSKES PAREKH’s Computer"
D [01/Sep/2009:19:05:43 +0100] [Job 5] envp[27]="PRINTER=HPDeskjet_D1500series"
D [01/Sep/2009:19:05:43 +0100] [Job 5] envp[28]="CUPS_FILETYPE=document"
D [01/Sep/2009:19:05:43 +0100] [Job 5] envp[29]="FINALCONTENT_TYPE=printer/HP_Deskjet_D1500series"
D [01/Sep/2009:19:05:43 +0100] [Job 5] Started filter /Library/Printers/hp/cups/Deskjet.driver/Contents/MacOS/Deskjet (PID 73854)
D [01/Sep/2009:19:05:43 +0100] [Job 5] Started backend /usr/libexec/cups/backend/usb (PID 73855)
D [01/Sep/2009:19:05:43 +0100] [Job 5] usb: AppleLanguages="en-US"
D [01/Sep/2009:19:05:43 +0100] [Job 5] STATE: +connecting-to-device
D [01/Sep/2009:19:05:43 +0100] [Job 5] Looking for 'HP Deskjet D1500 series'
D [01/Sep/2009:19:05:43 +0100] [Job 5] load_classdriver(/System/Library/Printers/Libraries/USBGenericTOPrintingClass.p lugin) (kr:0x00000000)
D [01/Sep/2009:19:05:43 +0100] [Job 5] Opening connection
D [01/Sep/2009:19:05:43 +0100] [Job 5] load_classdriver(/System/Library/Printers/Libraries/USBGenericTOPrintingClass.p lugin) (kr:0x00000000)
D [01/Sep/2009:19:05:43 +0100] [Job 5] STATE: -connecting-to-device
D [01/Sep/2009:19:05:43 +0100] [Job 5] Sending print data...
D [01/Sep/2009:19:05:43 +0100] [Job 5] Sent 0 bytes...
D [01/Sep/2009:19:05:43 +0100] [Job 5] End of messages
D [01/Sep/2009:19:05:43 +0100] [Job 5] printer-state=3(idle)
D [01/Sep/2009:19:05:43 +0100] [Job 5] printer-state-message="/Library/Printers/hp/cups/Deskjet.driver/Contents/MacOS/ Deskjet failed"
D [01/Sep/2009:19:05:43 +0100] [Job 5] printer-state-reasons=none
Model: MacBookPro3,1, BootROM MBP31.0070.B07, 2 processors, Intel Core 2 Duo, 2.4 GHz, 2 GB, SMC 1.18f5
Graphics: NVIDIA GeForce 8600M GT, GeForce 8600M GT, PCIe, 256 MB
Memory Module: global_name
AirPort: spairportwireless_card_type_airportextreme (0x168C, 0x87), Atheros 5416: 2.0.19.4
Bluetooth: Version 2.2.0f18, 2 service, 1 devices, 1 incoming serial ports
Network Service: Built-in Ethernet, Ethernet, en0
PCI Card: pci168c,24, sppci_othernetwork, PCI Slot 5
Serial ATA Device: Hitachi HTS541616J9SA00, 149.05 GB
Parallel ATA Device: MATSHITADVD-R UJ-85J
USB Device: Built-in iSight, 0x05ac (Apple Inc.), 0x8502, 0xfd400000
USB Device: Apple Internal Keyboard / Trackpad, 0x05ac (Apple Inc.), 0x021b, 0x5d200000
USB Device: IR Receiver, 0x05ac (Apple Inc.), 0x8242, 0x5d100000
USB Device: Deskjet D1500 series, 0x03f0 (Hewlett Packard), 0x1d04, 0x1a200000
USB Device: Bluetooth USB Host Controller, 0x05ac (Apple Inc.), 0x8205, 0x1a100000
what to do please?!!!!argh!!!!
rik;))

System extension cannot be used error message

I keep getting a message:
The system extension “/System/Library/Extensions/IOFireWireWDHID.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update.
I no longer use a Western Digital external hard drive so I am not sure how to remove this file so that I no longer get this message. Can anyone take me through the steps to fix this issue?
Thanks,
Allison
OSX 10.8.2
iMac 2011
3.1 GHz Intel Core i5

Hello,
See if the WD Installer has an uninstall function... you really don't need it at all.

System Extension Cannot Be Used? How do I fix?

Hello
I recently updated to Mavericks using 10.9.4, and installed a Canon Pro 100 printer. Ever since I did this I am getting the following message.
"System extension cannot be used
The system extension “/System/Library/Extensions/IOFireWireMxBt.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update."
Also, what is "IOFirwWireMx.kext"? If I knew what is was, I would try to re-install it, as it suggests. But I don't know what this is referring to. How do I fix this?
Thanks for your help.
Oudlady

I'm afraid there is no simple solution without a backup of the Mac before 10.9 was installed. There are user tips that explain the process, but it will vary for each user depending on what is used on the Mac.
Apple: Restoring a previous OS X version
How to revert OS X back from Mavericks
I have seen that many users complain about 10.9 being slow/ worse than "whatever was installed before".
Personally I find it comparable in performance to other OS's.
The trouble seems to be that users have migrated with many old apps installed from previous OS versions. Old system extensions & other background tasks that can make the OS perform badly. If installed software is not compatible with 10.9 it can cause errors (as the old Maxtor software illustrated).
The basic options are to clean up the OS (find out how to uninstall all the old stuff) or to reinstall the OS without the old apps.
The process usually involves creating an EtreCheck report to show people here what is installed. From there you can either decide to backup your data & reinstall or attempt to clean out some older apps (assuming that is what is causing the trouble).
http://etresoft.com/etrecheck
It helps if you include descriptions of what the actual issues are, e.g. Finder takes x mins to open folders.
You will also want to make a full backup onto another disk. Do you know how to do that?
I'd suggest you mark this thread as solved & then create a new thread so that the topic is clear. Post a link to it from here if you want me & Kappy to see it

Splash screen says "System extension cannot be used The system extension "/System/Library/Extensions/PulseDriver.kext" was installed improperly and cannot be used. Please try reinstalling it, or contact the product's vendor for an update. How to fix?

Please help!
After installing iTunes 11.0.1 I got a splash screen that appears after all updates. The screen reads:
System extension cannot be used
"The system extension “/System/Library/Extensions/PulseDriver.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update."
Question: How do I re-install or replace this file?
Jim

I submitted the above question, later finding that it has been answered by Buller already. No one need reply as Buller's answer seems to solve the problem for others, and I'll try that.
Jim

Changed Permission Settings: "System extension cannot be used"

I was having some weird problems with file sharing on my network recently, so I tried changing around some of the permissions on my drives to see if I could resolve it. For some reason I was getting messages saying I didn't have permission to copy files from one computer to another on my network. This seemed to come on randomly as we have been doing file transfers this way for quite some time now. I looked at our file sharing preferences in the System Preference's and added all 4 drives from my Mac Pro in there and made sure that my username had full read and write capabilities. I then tried logging into my Mac Pro from my iMac, just like I've done in the past, and I was still unable to copy the files. So I removed all the folders and turned off file sharing. I then clicked 'Get Info' for my main Macintosh HD and tried changing the permission settings there. I clicked the option to make my username the owner, and then I clicked 'Apply to enclosed items...' and this brought up a progress bar that I let go for about 10 minutes. Then I got a pop-up error message stating "System extension cannot be used" and had an extension path listed underneath, saying it was installed improperly and cannot be used. This happens an endless amount of times. It seems to be giving me this message for every single extension on the computer. If I hold down enter the pop-ups just keep coming with different extensions listed.
I hope someone with some insight on how permissions work in OS X Lion can give me some advice on how to resolve, and possible the correct way I should be setting up sharing if I've been doing wrong all this time. What strikes me as odd is that I never had any issues with sharing anything up until about a week or so ago, and I can't remember if there were any system updates that I installed that might have something to do with this.
Any help is much appreciated, thanks!

I had this problem recently in addition to my laptop getting stuck on the Apple logo and spinning icon. It took me a long to time to work through it so I thought I would share what I did to make it easier for others.
The best thing to do when having permission problems is to do a 'disk permissions repair'. You can do this using the disk utility app found in your applications/utilities folder. This will attempt to rewrite all the permissions that were incorrectly set. When it is doing this it is common to get a message saying 'ACL...found and not expected...' do not go and delete these files. Its normal for this correction process to take more than 30 minutes, for me it took an hour.
If this proccess doesnt work for you than you can also try a disk repair.
If you can't boot using the normal disk you can also access this program through the recovery boot (holding Command-R of Option at startup), through the safe mode (holding Shift on start up) or through a recovery CD. You can also boot in a terminal type mode but this is a last ditch effort as a misspelt command could do more damage. personally, because I do not know what the commands I am using actually mean, I would recommend talking to a person at apple then using this approach.
Hope this helps

"System Extension Cannot Be Used" Pop Ups on Startup

Hello,
When I start my computer I get these three pop up windows with the heading:
"System Extension Cannot Be Used"
The system extension “/System/Library/Extensions/SymOSXKernelUtilities.kext“ was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update.
The system extension “/System/Library/Extensions/DeleteTrap.kext“ was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update.
The system extension “/System/Library/Extensions/symfs.kext“ was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update.
Any ideas how to fix/get rid of these???
Gracias!
G4 Mac OS X (10.3.5) FCP, Adobe

Hello,
When I start my computer I get these three pop up
windows with the heading:
"System Extension Cannot Be Used"
The system extension
“/System/Library/Extensions/SymOSXKernelUtilities.kext
“ was installed improperly and cannot be used. Please
try reinstalling it, or contact the product’s vendor
for an update.
The system extension
“/System/Library/Extensions/DeleteTrap.kext“ was
installed improperly and cannot be used. Please try
reinstalling it, or contact the product’s vendor for
an update.
The system extension
“/System/Library/Extensions/symfs.kext“ was installed
improperly and cannot be used. Please try
reinstalling it, or contact the product’s vendor for
an update.
Any ideas how to fix/get rid of these???
Gracias!
G4 Mac
OS X (10.3.5) FCP, Adobe
Hi Eric,
Did you resolve this problem, using any of the suggestions posted. I am having the exact same problem. Cannot burn DVDs or CDs is this part of my problem. Drive reported an error. Sense key aborted command. Sense code =0x04 logical unit not ready, cause not reportable.

"System extension cannot be used" when updating iTunes

Every time I update iTunes through the standard Software Update, I get multiple messages towards the end of the installation saying:
*System extension cannot be used*
The system extension "/System/Library/Extensions/IOFireWireWDHID.kext" was installed improperly and cannot be used. Please try reinstalling it, or contact the product's vendor for an update.
This only happens when updating iTunes. Any ideas? Thank you in advance!

Hello MaxGraphics,
You both may want to read this article before proceeding. It does give you an idea about kext files and how to handle them.
http://www.ihackintosh.com/2009/02/what-is-kextwhere-is-kext-how-to-install-kext /
Hope this helps.

What does this mean? ... System extension cannot be used ... The system extension "/System/Library/Extensions/IOFireWireWDHID.kext" was installed improperly and cannot be used. Please try reinstalling it, or contact the product's vendor for an update.

I get this message often when updating things. I have told Small Dog Computer where I buy my stuff, and they didn't have an answer. Thanks in advance.
What does this mean? ... System extension cannot be used ... The system extension "/System/Library/Extensions/IOFireWireWDHID.kext" was installed improperly and cannot be used. Please try reinstalling it, or contact the product's vendor for an update.

Interesting ... thank you! Actually I had that external drive, Western Digital, a while back on my second last? or third last? laptop ... the external drive died with a slew of pictures I had carefully uploaded to it :-(
I won't worry about it anymore :-)
sorry you got only 5 points, can't figure how to give you 10 points.

System extension cannot be used..why?

I get this message:
system extension cannot be used.
the system extension “/Library/Frameworks/PrivateTunnel.framework/Versions/Current/Extensions/tun.ke xt” was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update.
What is wrong? How should fixt it?
O am very new with Mac and its OSX8.5
Thanks for help.
JJ

You really should contact the vendors technical support staff and have them assist you.
I note that you are using Lion. Some modems can only work in 32 bit mode. When you power up your MBP and hold the 2 and 3 keys down. When the MBP finishes the boot, then install the modem software and see if it works.
Ciao.

I get the error message:System extension cannot be used The system extension "/System/Library/Extensions/AppleUSBthernetHost.kext" was installed improperly and cannot be used. Please try reinstalling it, or contact the product's vendor for an update.

I get the error message after updating itunes:
System extension cannot be used
The system extension “/System/Library/Extensions/AppleUSBthernetHost.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update.
What or how do I fix this?

"I get the error message after updating itunes:
System extension cannot be used
The system extension “/System/Library/Extensions/AppleUSBthernetHost.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update.
What or how do I fix this?"
I have a MacBook Pro running Mas OS X Version 10.7.5
Is this a problem I need to fix? Is there a fix or update?

Now what when i'm told: "System extension cannot be used"

I was installing Propellerheads Record ( package installation ) when this message pops up near the end of installation:
System extension cannot be used: The system extension "/System/Libraryu/Extensions/CmUSBMassStorage.kext" was installed improperly and cannot be used. Please try reinstalling it, or contact the product's vendor for an update.
And then the installer went on and said installation was a success giving it the green check mark.
I have no clue who the vendor was.
How do fix it?
Is it related somehow to my iMac 306 and it TB harddrive?

a brody wrote:
Sounds like a typo was made by the installer.
There is /System/Library/Extensions/ but no /System/Libraryu/Extensions/
The 'u' after Library may either indicate an accented symbol
The mass storage kernele extention for USB would be for devices that store data that are connected to your USB port. Now, I don't have a registration for their support website, however, they do have a Snow Leopard comaptibility statement if you do register. I would register, and see what it has to say, before you attempt any further installs.
Aside from my typing mistake i should have said that this was a demo version to give me a taste before i buy.
I've sent propellerheads a question thru their web page.

System extension cannot be used - rtl8187bl.kext

hi,
sometimes when i use system update i get this error message:
title: system extension cannot be used
message: the system extension "/System/Library/Extensions/RTL8187Bl.kext" was installed improperly and cannot be used. Please try reinstalling it, or contact the product's vendor for an update.
i'm pretty sure its a driver for network device (ethernet or wifi), both of them works fine for me, and i have no idea how to update/reinstall drivers under MacOS.
any idea/tip/guess can help,
thank you.

See the following:
Uninstalling Software: The Basics
Most OS X applications are completely self-contained "packages" that can be uninstalled by simply dragging the application to the Trash. Applications may create preference files that are stored in the /Home/Library/Preferences/ folder. Although they do nothing once you delete the associated application, they do take up some disk space. If you want you can look for them in the above location and delete them, too.
Some applications may install an uninstaller program that can be used to remove the application. In some cases the uninstaller may be part of the application's installer, and is invoked by clicking on a Customize button that will appear during the install process.
Some applications may install components in the /Home/Library/Applications Support/ folder. You can also check there to see if the application has created a folder. You can also delete the folder that's in the Applications Support folder. Again, they don't do anything but take up disk space once the application is trashed.
Some applications may install a startupitem or a Log In item. Startupitems are usually installed in the /Library/StartupItems/ folder and less often in the /Home/Library/StartupItems/ folder. Log In Items are set in the Accounts preferences. Open System Preferences, click on the Accounts icon, then click on the LogIn Items tab. Locate the item in the list for the application you want to remove and click on the "-" button to delete it from the list.
Some software use startup daemons or agents that are a new feature of the OS. Look for them in /Library/LaunchAgents/ and /Library/LaunchDaemons/ or in /Home/Library/LaunchAgents/.
If an application installs any other files the best way to track them down is to do a Finder search using the application name or the developer name as the search term. Unfortunately Spotlight will not look in certain folders by default. You can modify Spotlight's behavior or use a third-party search utility, Easy Find, instead. Download Easy Find at VersionTracker or MacUpdate.
Some applications install a receipt in the /Library/Receipts/ folder. Usually with the same name as the program or the developer. The item generally has a ".pkg" extension. Be sure you also delete this item as some programs use it to determine if it's already installed.
There are many utilities that can uninstall applications. Here is a selection:
AppZapper
Automaton
Hazel
CleanApp
Yank
SuperPop
Uninstaller
Spring Cleaning
Look for them at VersionTracker or MacUpdate.
For more information visit The XLab FAQs and read the FAQ on removing software.

System extension cannot be used? (AppleAirport2.kext)

I rebooted my computer yesterday because it had started acting kindof slow for some reason. I figured that since quitting Safari, which had been open for several days, didn't do it- a reboot ought to.
When I logged in after rebooting, I got this message:
"System extension cannot be used.
The system extension "/System/Library/Extensions/AppleAirPort2.kext" was installed improperly and cannot be used. Please try reinstalling it, or contact the product's vendor for an update."
I haven't installed or tinkered with my computer recently, and it's been rebooted several times since the last time I had, so I don't understand why it suddenly seemed to forget it had an Airport Extreme card.
I tried throwing the Airport Extreme updates on a USB drive and reinstalling it, but it didn't do the trick.
It's running OS X 10.4, I'm pretty sure it's the .6 release, but I don't have the machine in front of me at the moment to verify.
Does anyone have an idea as to why this may have happened, or how I can fix it? Thank you so much in advance!

It is, indeed, running 10.4.6.
It was 10.4.5's combo update that had the file.
I tried installing and replacing the version of AppleAirport2.kext and rebooting and it didn't give that message when I logged in anymore. It still wasn't seeing that there was an AirportExtreme card present, though.
I deleted the file, as well as the two cache files as I had seen to try doing before I posted here, rebooted, installed the file with Pacifist.
I was using my PowerBook to check my settings here while the G5 started up. iChat on the PowerBook logged off, and I heard it log in on the G5!
Thank you both so much!

System Extension Cannot Be Used message pop-up

I just upgraded from an iMac power pc to a new iMac with snow leopard. I have an HP Photosmart B8850 printer and uninstalled the previous software driver and installed updated software. The problem is that I get a warning box with the message [ System Extension Cannot Be Used. The system extension “/system/Library/Extensions/hp/photosmartb8800series.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the products vendor for an update.] It appears that Library/Extensions is empty. The printer seems to be working properly. Do I need the system extension? If not, how can I keep the warning box from popping up?

If you are looking in /Library/Extensions for this file as your message seems to indicate, you are looking in the wrong place. Go to your Finder's Go menu and select *Go to Folder...* then type in /system/Library/Extensions
Best of luck.

How to resolve "System extension cannot be used" error.

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