Error message + macbook pro crashing!!

Discussion in 'Mac Basics and Help' started by ragingrob75, Jan 11, 2011.

  1. ragingrob75 macrumors newbie

    Joined:
    Jan 11, 2011
    #1
    Hey all,

    I had to get my screen replaced earlier this year under warranty and ever since then I have been receiving an error message on startup that pops up each time just within 5 minutes or so of logging in, and then lately my lappy has been randomly shutting down :confused:

    The error message states something about some extension vlabkernaladditions.kext not being found and needing to be re-installed or something. I will update this with the exact message on my next startup.

    Does anybody know anything about this?? Any suggestions on how to go about fixing this problem?

    Thanks in advance!!

    Rob
     
  2. ragingrob75 thread starter macrumors newbie

    Joined:
    Jan 11, 2011
    #2
    Here's the full message...

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

    Anyone have an idea how to fix this??

    Cheers
     
  3. LPZ macrumors 65816

    Joined:
    Jul 11, 2006
    #3
    Well, how to fix is "Please try reinstalling it, or contact the product's vendor for an update."

    So, who's the vendor? Does VLab ring any bells?

    Let's try to get some info about the extension. Open Terminal (in Utilities), paste in the following and press return:

    Code:
    ls -l /System/Library/Extensions/VLabKernelAdditions.kext
    Post the entire output (to check for improper permissions).

    Then paste the following into Terminal and press return:

    Code:
    cat /System/Library/Extensions/VLabKernelAdditions.kext/Contents/Info.plist
    Post the entire output.

    Finally, paste in

    Code:
    cat /System/Library/Extensions/VLabKernelAdditions.kext/Contents/Version.plist
    and post the output
     
  4. ragingrob75 thread starter macrumors newbie

    Joined:
    Jan 11, 2011
    #4
    Hmmm I can't think of anything that goes by the name of Vlab, off the top of my head anyway.

    Ok, here we go...

    Code:
    ls -l /System/Library/Extensions/VLabKernelAdditions.kext
    gives

    total 0
    dr-x------@ 5 Rob admin 170 16 Mar 2004 Contents

    Code:
    cat /System/Library/Extensions/VLabKernelAdditions.kext/Contents/Info.plist
    gives

    <?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
    <plist version="1.0">
    <dict>
    <key>CFBundleDevelopmentRegion</key>
    <string>English</string>
    <key>CFBundleExecutable</key>
    <string>VLabKernelAdditions</string>
    <key>CFBundleGetInfoString</key>
    <string>VirtualLab Kernel Extension</string>
    <key>CFBundleIdentifier</key>
    <string>com.totalrecall.driver.vlabkerneladditions</string>
    <key>CFBundleInfoDictionaryVersion</key>
    <string>6.0</string>
    <key>CFBundleName</key>
    <string>VLabKernelAdditions</string>
    <key>CFBundlePackageType</key>
    <string>KEXT</string>
    <key>CFBundleShortVersionString</key>
    <string>1.2.0</string>
    <key>CFBundleSignature</key>
    <string>????</string>
    <key>CFBundleVersion</key>
    <string>1.2.0</string>
    <key>OSBundleLibraries</key>
    <dict>
    <key>com.apple.kernel.bsd</key>
    <string>1.1</string>
    <key>com.apple.kernel.mach</key>
    <string>1.1</string>
    </dict>
    </dict>
    </plist>

    And finally

    Code:
    cat /System/Library/Extensions/VLabKernelAdditions.kext/Contents/Version.plist
    gives

    cat: /System/Library/Extensions/VLabKernelAdditions.kext/Contents/Version.plist: No such file or directory


    :confused:
     
  5. LPZ macrumors 65816

    Joined:
    Jul 11, 2006
    #5
    Based on the info you posted, it must be related to this: http://www.totalrecall.com/data_recovery_software_macosx.html

    I think that's the cause of the problem. The permissions are screwed up. Did you "install" this yourself in some manner? If not, I wouldn't want this company putting software on my machine. :rolleyes:

    Here's the question---is this software from totalrecall.com something you want/use on your system? It's non-Apple, third-party stuff, so someone put it where it is.

    If not, you should probably submit a ticket at http://www.totalrecall.com/support/ and request specific instructions for the complete uninstall of the product on Mac OS X. If that fails, you could simply delete that VLabKernelAdditions.kext folder from /System/Library/Extensions.
    That should take care of the warning messages, and the related software that would remain on your system would likely be inert.

    If you do want this product on your system, the software needs to have its ownership and permissions fixed. I could give you some Terminal commands that would roughly accomplish this, but it would be better to remove everything and reinstall it properly. Again, I'd try submitting a ticket at http://www.totalrecall.com/support/.

    By the way, are you sure you have no idea of how this stuff got installed so badly in the first place? It seems likely that you or someone on your machine must have done this, since otherwise my Googling should have turned up some number of similar reports about this kernel extension.
     
  6. MacTribe macrumors member

    MacTribe

    Joined:
    Dec 26, 2010
    Location:
    London
    #6
    After any major hardware change, I usually suggest re-installing the OS. But thats just me (i like to keep things simple!) :rolleyes:
     
  7. LPZ macrumors 65816

    Joined:
    Jul 11, 2006
    #7
    In this case the problem seems completely unrelated to the screen replacement.
     
  8. lgoldman macrumors newbie

    Joined:
    Jan 15, 2011
    #8
    I've had that same message popping up from time to time. Never knew the source of it until now.
     
  9. ragingrob75 thread starter macrumors newbie

    Joined:
    Jan 11, 2011
    #9
    I have sent a ticket in requesting uninstallation instructions. Still awaiting reply...
     
  10. ragingrob75 thread starter macrumors newbie

    Joined:
    Jan 11, 2011
    #10
    Ok no reply. I removed the .kext file from extensions and now the error message doesn't appear but laptop still seems to crash if running on battery and being over exerted... So I'm thinking a hardware failure.

    Problem is I'm overseas at the moment and my warranty details etc are all at home! Might have to try and send laptop home to get sorted out :mad:
     
  11. LPZ macrumors 65816

    Joined:
    Jul 11, 2006
    #11
    Can you copy and post a typical crash report. Hardware problems typically generate kernel panics and panic logs.
     
  12. ragingrob75 thread starter macrumors newbie

    Joined:
    Jan 11, 2011
    #12
    Yup how do I go about getting a crash report?
     
  13. LPZ macrumors 65816

    Joined:
    Jul 11, 2006
    #13
    Open Console (in Utilities). In the Log list in the first column, look under DIAGNOSTIC AND USAGE INFORMATION and then under User Diagnostic Reports (or maybe System Diagnostic Reports). Click on a recent typical crash report and paste it into your post.
     
  14. ragingrob75 thread starter macrumors newbie

    Joined:
    Jan 11, 2011
    #14
    Ok there are two logs.

    The first under "Javaapplicationstub...":

    Process: JavaApplicationStub [619]
    Path: /Applications/Vuze.app/Contents/MacOS/JavaApplicationStub
    Identifier: org.gudy.azureus2
    Version: 4.5.0.2 (4.5.0.2)
    Code Type: X86 (Native)
    Parent Process: launchd [81]

    Date/Time: 2011-01-11 17:50:01.959 +1300
    OS Version: Mac OS X 10.6.4 (10F569)
    Report Version: 6

    Exception Type: EXC_BAD_ACCESS (SIGBUS)
    Exception Codes: KERN_PROTECTION_FAILURE at 0x0000000000000008
    Crashed Thread: 0 Dispatch queue: com.apple.main-thread

    Application Specific Information:

    Java information:
    Exception type: Bus Error (0xa) at pc=0000000028a9df89

    Java VM: Java HotSpot(TM) Client VM (17.1-b03-307 mixed mode macosx-x86)




    And the second under "VLC_2011-01-16-2107...":

    Process: VLC [242]
    Path: /Applications/VLC.app/Contents/MacOS/VLC
    Identifier: org.videolan.vlc
    Version: 0.9.8 (0.9.8a)
    Code Type: X86 (Native)
    Parent Process: launchd [91]

    Date/Time: 2011-01-16 21:07:49.619 +1300
    OS Version: Mac OS X 10.6.4 (10F569)
    Report Version: 6

    Exception Type: EXC_BAD_ACCESS (SIGSEGV)
    Exception Codes: KERN_INVALID_ADDRESS at 0x00000000425c0000
    Crashed Thread: 0 Dispatch queue: com.apple.main-thread



    Hope that helps!!!
     
  15. LPZ macrumors 65816

    Joined:
    Jul 11, 2006
  16. ragingrob75 thread starter macrumors newbie

    Joined:
    Jan 11, 2011
    #16
  17. LPZ macrumors 65816

    Joined:
    Jul 11, 2006
    #17
    First check if updates are available that you haven't installed. If not, then you might want to create a new account and use it to test your existing versions of the programs. If they behave well on the new account, then you might have a corrupted preference file in your account.

    Uninstall and reinstall is also an option, but be sure you fully install if you decide to take that route.
     

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