System/library/extensions error

I keep getting errors that all the files in my system/library/extensions file were installed incorrectly and cannot be used. what should I do to fix that?

Download and install the 10.6.4 COMBO update. If that doesn't fix things, reinstall SL, followed by running Software Update. That removes all OS components and puts down new ones.

Similar Messages

  • 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

  • Help with this error message: System extenstion cannot be used:The system extension "/System/Library/Extensions/AppleACPIPlatform.kext" was installed improperly and cannot be used. Please try reinstalling it, or contact the product's vendor for an update.

    I have this error message:
    System extension cannot be used
    The system extension “/System/Library/Extensions/AppleACPIPlatform.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update.
    Please help. Is there a update or how do I reinstall?
    Thanks,
    John

    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

  • /System/Library/Extensions/USBAtTable.kext installation error (Xcode)

    While installing Xcode 3.2 and iPhone SDK 3.1 for Mac OS X 10.6 Snow Leopard, the following error message is shown "/System/Library/Extensions/USBAtTable.kext installation error". Could anyone help.
    Regards,
    MKS

    Try the developer forums under OS X Technologies. Alternatively, download and install Xcode Tools 3.2.1, followed by the latest iPhone SDK.

  • 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?

  • When you try to upgrade mac OS 10.6.8. to 10.9. produces an error   System expansion «/ System / Library / Extensions / USBExpressCardCantWake_Huawei.kext» not installed correctly.

    When you try to upgrade mac OS 10.6.8. to 10.9. produces an error   System expansion «/ System / Library / Extensions / USBExpressCardCantWake_Huawei.kext» not installed correctly. What can I do. My friend have this problem and Ihelp to her

    Make sure the Mac can run v10.9 Mavericks >  OS X Mavericks: System Requirements

  • Error message: /System/Library/Extensions/CDSDAudioCaptureSupport.kext

    All of a sudden I keep getting this error message:
    The system extension "/System/Library/Extensions/CDSDAudioCaptureSupport.kext" was installed improperly and cannot be used. Please try reinstalling it, or contact the product's vendor for an update.

    Try this:
    Repairing the Hard Drive and Permissions
    Boot from your OS X Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Installer menu (Utilities menu for Tiger and Leopard.) After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer. Now restart normally.
    If DU reports errors it cannot fix, then you will need Disk Warrior (4.0 for Tiger, and 4.1 for Leopard) and/or TechTool Pro (4.6.1 for Leopard) to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.

  • 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.

  • How do you fix the error - "The system extension "/System/Library/Extensions/IOBDStorageFamily.kext" was installed improperly and cannot be used. Please try reinstalling it, or contact the product's vendor for an update."

    I have started getting this error every time I download anything to my computer. I want to know how to fix the issue so it dosen't happen anymore. The error is as follows:
    The system extension “/System/Library/Extensions/IOBDStorageFamily.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update.
    Please help me.

    Darned drivers.  Did you try using it without the drivers?  They may already be in Mountain Lion.  I'm super wary of vendor drivers for OS X; they're terrible and often an OS version out of date.
    To re-install OS X, log into the Mac App Store, go to "purchased," re-download Mountain Lion, and double click "Install Mountain Lion" as you did the first time.  You won't lose data (have a backup!) and an hour later you should be good to go.
    After that, try using the printer WITHOUT installing the darned Lexmark drivers.

  • EXTENSION Help Get Error /System/Library/Extensions/hpPlugInInit.kext was installed improperly How do I reinstall correctly?

    /System/Library/Extensions/hpPlugInInit.kext was installed improperly How do I reinstall correctly? I can never upgrade software because of this error.

    Go to that folder and delete that file, then reinstall whatever software it was a part of (probably some HP printer software, I'd guess?).

  • I am getting an error message that indicates /system/library/extensions/OnUSBMassStorage.kext was installed improperly.  How do I fix this?

    I am getting an error message that indicates /system/library/extensions/OnUSBMassStorage.kext was installed improperly.  How do I fix this?

    First off, you are running an intel not a PPC.
    Second have you attached a USB external drive to your computer?  Remove all peripherals and see if the message goes away.  Then reattach each peripheral one by one to weed out the problematic one.

  • HT1338 Error message: system/library/extensions/symDC.kext was installed improperly

    Each time I update a new version of OS X an error message appears saying "The system extesion system/library/extensions/symDC.kext was installed improperly and cannot be used. Please try reinstalling it, or contact the product's vendor for an update."
    Please provide help in order to fix it.

    X423424X wrote:
    No such thing as Library/Extensions. 
    Wrong.
    X423424X wrote:
    All kexts must reside in /System/Library/Extensions.
    Right.

  • Got error message - //System/Library/Extensions/AppleUSBEthernetHost.kext" was installed improperly and cannot be used.

    Was updating at the App Store - Safari, iTunes, iWorks 09 and prior to that had updated something at Adobe's website.  Then this error message popped up:
    “//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.
    (I  just received a refurbished computer with a new hard drive from a local Apple repair store...
    Is this an easy fix.  Thanks, Charlotte

    What I ended up doing is a reinstall the OS.
    There was an important component I forgot to mention...my hard drive had crashed and I had it replaced.  When it was replaced - the old drive was copied to the new.  Since the prior error messages I had gotten from MemTest and CheckMate kept saying Bad Blocks in the drive - it was suggested that the corrupt or missing data on these "bad blocks" had not copied or copied incorrectly.
    So only time will tell if this fixed this error.  (Don't have external hard drive so never had Time Machine set up to begin with.)  Original computer was refurbished and believe some things weren't done right from the get go.  Oh well...  Hope I didn't lead anyone astray.

  • Error message 'System/Library/Extensions/AppleUSBEthernetHost' not able to print anymore

    Possibly the source of the error message is: 'AppleUSBEthernetHost.kext' has not been installed properly and cannot be used. on my Mac Book Pro'13 early '11 is http://download1290.mediafire.com/5u5azohfzhgg/zo22n2u2eml78vc/AppleUSBEthernetH ost, http://www.mediafire.com/download/zo22n2u2eml78vc/AppleUSBEthernetHost - I cancelled the download, but I found it in my downloads.
    Resulting that I cannot print any more wired and wireless. Please would you help to fix this problem at short term? Thank you.

    Hi Domique,
    Thank you very much for your answer. Yesterday I moved the file to the Trash and restarted the PC. Afterwards it didn't succeed to print.
    Today (at lunchtime) I didn't find the file AppleUSBEthernetHost.kext at all on my PC. I did request a software update, but no updates were available.
    I just (at dinertime) solved the wireless printing problem. By adding a new printer (my own printer) and gave it another name (extension of date of today). I did do this also yesterday, but it didn't solve both printing problems at all.
    Now I am able to print wireless. I also looked again if the file AppleUSBEthernetHost.kext was on the system. Yes! It was at the right place System/library/extensions/. It's an old file of 16.05.2011.
    The wired printing possibility is still UNSOLVED. Please would you help me to solve this problem too? Thank you very much in advance!

  • Error  "/System/Library/Extensions/CMSLogicalUnitDriver3.kext"

    I get the following error when my external hard drive mounts: "/System/Library/Extensions/CMSLogicalUnitDriver3.kext" what is this and how do I fix it

    That's not a Mac OS file. It's some third-party software you installed, possibly from this developer:
    Backup Software | Data Security Solutions | Server Backup

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