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.

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:
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0x100294000 - 0x1002f5fff +com.hp.Interlaken 03.00.009 (1.0.0d1) <FFAABE08-2938-7BDD-28F2-4CC72B9CC941> /Library/Printers/hp/Frameworks/Interlaken.framework/Versions/DI_ILLN.A.03.00.0 09/Interlaken
0x1002ff000 - 0x100303fef +com.hp.ResourceManager 04.08.001 (1.0.0d1) <BAF4D801-5683-98EB-8A2C-DF040703BBA2> /Library/Printers/hp/Frameworks/ResourceManager.framework/Versions/DI_RM.A.04.0 8.001/ResourceManager
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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;))

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)

HT1151 I keep getting an error message when installing new software that says "System extension cannot be used /system/library/extension/IoFireWireWDHID.kext was installed improperly" I have no idea what this means and all of my software seems to install

I keep getting an error message when installing new software that says "System extension cannot be used /system/library/extension/IoFireWireWDHID.kext was installed improperly" I have no idea what this means and all of my software seems to install okay

Hello Valerie Anderson,
I'm Harry from Norton Support team. Please check the information provided in a similar thread here:
https://discussions.apple.com/message/21854775#21854775
Let me know if this helps.
Thanks!
Harry

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?

HP Laser Printer message saying "System Extension Cannot Be Used"

I am trying to install a laserjet printer but while it was installing, a message came up which read, "'System Extension Cannot Be Used' The system extension, "/System/Library/Extensions/AppleUSBEthernetHost.kext' was installed improperly and cannot be used. Please try reinstalling it, or contact the product's vendor for an update." We tried the printer out and it seems to work, however, the scanner does not work.
When I got this Mac Book Pro, 4 or 5 years ago, I had a HP inkjet printer which I can never use the scanning feature because it did not work. I don't remember what the error message was, but it never worked when I tried to use it. I wonder if the problems with scanning have to do with this particular file that is supposedly installed wrongly.
We tested the printer out and it worked fine. But no scanning. It can't find the scanner.
My computer is Mac OS X - 10.6.8. The printer is HP Laserjet Pro 200 color MFP.
Anyone have any idea what I should do to fix this error? Thanks.

Open the Script Editor in the /Applications/AppleScript/ folder, copy and paste the entire following line into it, and press the Run button:
do shell script "chown -R root:wheel /System/Library/Extensions/AppleUSBEthernetHost.kext" with administrator privileges
If it doesn’t work, choose Go to Folder from the Finder's Go menu, provide /System/Library/Extensions/ as the path, throw the AppleUSBEthernetHost.kext item away, and reinstall iTunes.
(118910)

Error: system extension cannot be used

I get the error "system extension cannot be used" and then it says below it:
The system extension "/System/Library/Extensions/AppleIntelAC97Audio.kext" was installed improperly and cannot be used. Please try reinstalling it, or contact the product's vendor for an update.
it says the same for:
AppleIntelAC97Controller.kext
BJUSBLoad.kext
CHUDKernLib.kext
CHUDProf.kext
CHUDUtils.kext
EPSONUSBPrintClass.kext
hpPlugInInit.kext
KLog.kext
LexmarkUSBMerge.kext
prlhidhook.kext
prl_hypervisor.kext
prl_netbridge.kext
prl_tg.kext
prlusbconnect.kext
prl_video.kext
prl_vnic.kext
RBIOKitHelper.kext
Soundflower.kext
Wacom Tablet.kext
I have done permissions repair at least 10 times in a row and it still comes up with things to repair but is there another soloution?
Also, It says i have insufficient permissions to get onto my external HD now as well.
Anything will help...

I had the same problem. Then due to another unrelated problem I did a file system check in single user mode and this problem too went away. I am not sure if it will also work for you but no harm to try.
Shutdown, restart by pressing power button. As soon as you hear the chime, press cmd-s. After a while lot of text will roll down the screen, leave the keys. At the prompt, type fsck -fy. Note the space. then hit return. If at the end of the run you get something was repaired, then run it again till you get 'OK'. After that type reboot and you will boot into regular OS X. Then do whatever you did to get this message and see if it goes away.

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

Received following message during installation of an iTunes update today (9/16/14): System extension cannot be used. The system extension “//System/Library/Extensions/AppleUSBEthernetHost.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update. What is to be done about it?

Thanks for the reply. I'm not experienced in the inner workings of the iMac system and its programs, so please follow my train of thought as I try to find and understand your reply.
You wrote that I should check out "Please see - AppleUSBEthernetHost.kext error on installing iTunes update" and I did so.
There I found your reply of 9/1014 7:06 PM to j'ski stating: "There is a larger thread here which you may want to follow - system extension cannot be used AppleUSBEthernetHost.kext ."
And an earlier Post by Greg Earle of 9/10/14 5:57 PM stating: " You would have been better off doing open /System/Library/Extensions and then finding the AppleUSBEthernetHost.kext kernel extension icon in the Finder window that came up and moving it to the Trash."
And a subsequent Post on 9/15/14 at 2:59 PM by Rob Maurer stating: "This method worked perfectly for me. I am on a Mac Pro running Mountain Lion. Dragged the kext file to trash (I use EasyFind. Found the file, Revealed in Finder, dragged to Trash, entered admin password when requested). Downloaded iTunes 11.4 from the website. Installed from that download. Checked for that kext file in EasyFind again and found it had a creation date of 7/29/14 (the trashed one had a creation date from 2009). No more error messages. ITunes opens fine. Everything good. Will not update on my MacBook Pro until they fix this issue.
All of which leave me wondering - what is your answer/recommendation? Do I drag the kext file to trash, download iTunes 11.4 from the website and install it from that download, check for that kext file again to see if it has a later date than the initial one? And, if so, seed if iTunes opens okay or not? And if so, do not update iTunes again until Apple fixes whatever is wrong?

In running the Software Updater, I encountered an error: "System Extension cannot be used" ... System/Library/Extensions/AppleUSBEthernetHost.kext was installed improperly and cannot be used.

While running the Software Updater, I encountered an error: "System Extension cannot be used" ... System/Library/Extensions/AppleUSBEthernetHost.kext was installed improperly and cannot be used. Can somebody help me resolve this error message. Would this error affect my ability to run FaceTime ?

Seems pretty clear to me. Here's what you can try:
Open Terminal in your Utilities folder. Paste the following at the prompt:
sudo chown -R root:wheel /System/Library/Extensions/AppleUSBEthernetHost.kext
Press RETURN. Enter admin password when prompted. It will not be echoed so type carefully. Press RETURN again.
Restart the computer.

System Extension Cannot Be Used: Soundflower Error?

I've had this issue for a long time now and I never knew what started it, it just started happening one day.andomly get
Anyways, I randomly get this pop up message that says:
System extension cannot be used
The system extension "/System/Library/Extensions/Soundflower.kext" was installed improperly and cannot be used.
Please try reinstalling it, or contact the product's vendor for an update.
There's no reason or rhyme to when it happens. I think maybe the app Boom that boosts volumes sometimes triggers it, but its never 100%. Also I googled around and I've tried some things like that restart the computer and have it run the system check and it didnt fix it
If anyone can point me in the right direction on what this might be I'd be very appreciative.

Open the Script Editor in the /Applications/AppleScript/ 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.
(113146)

"system extension cannot be used" message upon startup

Ever since I upgraded OS 10.3.9 to Tiger on w/my newly purchased OS 10.4.6 from Apple, my 12" Powerbook G4 displays a yellow triangle containing an exclamation mark beside which is the message
*System extension cannot be used.*
The system extension "/Library/Extensions/VirtualPCOSServices.kext" was installed improperly and cannot be used. Please try reinstalling it, or contact the product's vendor for an update.
I assume this refers to something about Virtual PC (which I no longer use) that I had on my hard drive before installing Tiger, and even though I've since upgraded to 10.4.10, the message continues to appear. Is there anything I can do before reinstalling 10.4.6, or is that indeed the best solution, and will that solve it?
Thanks in advance for any help out there. - Rick

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.

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.

System extension cannot be used, now no AirPort Card Installed?!?!?!?!

I have had my MBP for some time now and the other day it went into a kernel panic and after having to go through all the processes to recover it including restoring from the time capsule so that it doesn't take over 10 mins to start up an error message came up saying;
"*System extension cannot be used*"
"the system extension '/System/Library/Extensions/IO80211Family.kext/Contents/PlugIns/AppleAirPortBrc m4311.kext' was installed improperly and cannot be used. Please try reinstalling it, or contact the product's vendor for an update"
Now i cant use my airport card at all, it says that there is no airport card installed and I have spent hours on the phone to apple, done the option + command + r + p thing and had to restore my whole system off my TC with the backup disks and all.
Plz plz plz plz help, i just want it back the way it was, this is so annoying
Message was edited by: TBlank

I had the same problem. It happened to me after I updated to 10.5.6. I didn't notice the problem until I rebooted a few days later. I reinstalled the system from disk and then realized that even though it took almost an hour it didn't really install anything. So I deleted the whole /System/Library/Extensions/IO80211Family.kext and reinstalled the system again. This time it worked

System extension cannot be used - on startup?

Recently, I had to repair permissions after a error cause me not to be able to login. I did a startup from the disc and got in, but now these error messages come up;
System extension cannot be used
"/System/Library/Extensions/SymIPS.kext" was installed improperly and cannont be used. Please reinstalling it, or contact the vendor for an update... and;
"/System/Library/Extensions/SymIInternetSecurity.kext" was installed improperly and cannont be used. Please reinstalling it, or contact the vendor for an update... and;
"/System/Library/Extensions/IO80211Family.kext/Contents/PlugIns/AppleAirPortCrcm 4311.kext" was installed improperly and cannont be used. Please reinstalling it, or contact the vendor for an update... and;
"/System/Library/Extensions/IO80211Family.kext" was installed improperly and cannont be used. Please reinstalling it, or contact the vendor for an update...
not to mention now it says I don't have airport card and the internet is running slower!
I have completed further repair disk permissions.
What can I do?
Thanks.

HI,
*"System extension cannot be used"*
*"/System/Library/Extensions/SymIPS.kext" was installed improperly and cannont be used. Please reinstalling it, or contact the vendor for an update... and;*
*"/System/Library/Extensions/SymIInternetSecurity.kext" was installed improperly and cannont be used. Please reinstalling it, or contact the vendor for an update... and;*
*"/System/Library/Extensions/IO80211Family.kext/Contents/PlugIns/AppleAirPortCrc m4311.kext" was installed improperly and cannont be used. Please reinstalling it, or contact the vendor for an update... and;*
*"/System/Library/Extensions/IO80211Family.kext" was installed improperly and cannont be used. Please reinstalling it, or contact the vendor for an update... "*
Is this the results of booting from your install disk and using Disk Utility to Verify the drive, or just repair permissions?
Carolyn

System extension cannot be used - GeneIOUSBCFSubclass.kext

I just installed the iTunes 9.0.2 update. Toward the end of the install, an error message popped up:
System extension cannot be used
.../SYstem/Library/Extensions/GeneIOUSBCFSubclass.kext...
But the update appeared to complete successfully.
Any ideas?

That appears to be some (antiquated?) third party driver for an external USB device.
http://www.google.com/search?q=GeneIOUSBCFSubclass.kext

System extension cannot be used error message

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