System message keeps appearing but I can't discover the product it relates to.

This is a discussion on System message keeps appearing but I can't discover the product it relates to. within the MacBook Pro forums, part of the Macbook Forum category; I used to get this message every time Lion did an update and now its appearing in Mountain Lion. I have a Macbook Pro and ...

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Thread: System message keeps appearing but I can't discover the product it relates to.

  1. #1
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    System message keeps appearing but I can't discover the product it relates to.

    I used to get this message every time Lion did an update and now its appearing in Mountain Lion. I have a Macbook Pro and Lion was the system it came with. Does anyone know what I need to do to fix this please? I haven't used the card slot if thats what it refers to but everything else appears to be working ok.
    "The system extension “/System/Library/Extensions/USBExpressCardCantWake_Huawei.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update."
    Any help much appreciated.

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  3. #2
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    A 'kext' is the Apple equivalent to a Windows 'driver'. 'Huawei' make mobile broadband dongles amoungst other things. Have you ever tried to use one of these devices in the past?


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    JezzerP :)
    'Orac' - MacBook Pro 13" Mid 2012 - Yosemite (10.10.1)
    'Marvin' - Hackintosh - Mavericks (10.9.5)
    'Holly' - Hackintosh - Mavericks Server (10.9.5)

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    Ah! When I first bought it I tried to use a Vodafone dongle but it didn't work with a mac. I had forgotten about that. Can I remove the files it tried to install? Would that help remove this message? Where would I find them?

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    I have the same error message and I had also attempted to use a Vodafone USB 3G dongle. So instructions on removal would be greatly appreciated.

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    Are you using Mountain Lion as well ismith78 ?

    Welcome to the forums by the way
    'Orac' - MacBook Pro 13" Mid 2012 - Yosemite (10.10.1)
    'Marvin' - Hackintosh - Mavericks (10.9.5)
    'Holly' - Hackintosh - Mavericks Server (10.9.5)

    iPhone 5S - iOS 8.1.1
    iPad Air - iOS 8.1.1

  7. #6
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    No I'm using Lion - 10.7.5

  8. #7
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    OK, when you attempted to use the Vodafone dongle, did you have to install any software, either downloaded or from a CD?


    If not, then what we need to do is unload the next file from the system. This isn't a case of simply deleting the offending file, but requires you to use the Terminal window:

    • Go to Applications > Utilities and click on the Terminal app.
    • A simple window with a command prompt will be displayed.
    • At the flashing cursor type the following :
    sudo kextunload /System/Library/Extensions/USBExpressCardCantWake_Huawei.kext
    • Press <Return>
    • You may be asked to type in your administrator password.
    System message keeps appearing but I can't discover the product it relates to.-kext_removal.png


    This will hopefully remove the next from the system, and if you reboot your Mac the error message 'should' be gone.


    If you installed a software package, then we will have to find out the name of the package and uninstall it.
    'Orac' - MacBook Pro 13" Mid 2012 - Yosemite (10.10.1)
    'Marvin' - Hackintosh - Mavericks (10.9.5)
    'Holly' - Hackintosh - Mavericks Server (10.9.5)

    iPhone 5S - iOS 8.1.1
    iPad Air - iOS 8.1.1

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    Doesn't look like it was successful

    I'm not sure what the USB stick did try to install. Looking at the Applications menu I don't see anything that got installed - I think it had aborted before it got there.

    However the kextunload failed. From Terminal:-

    Ians-MacBook-Pro:~ iansmith$ sudo kextunload /System/Library/Extensions/USBExpressCardCantWake_Huawei.kext
    Password:
    (kernel) Kext com.apple.dts.driver.USBExpressCardCantWake not found for unload request.
    Failed to unload com.apple.dts.driver.USBExpressCardCantWake - (libkern/kext) not found.

    Doing a ls in there only shows a Contents directory. In that directory is a single file called Info.plist

    Ians-MacBook-Pro:~ iansmith$ ls -l /System/Library/Extensions/USBExpressCardCantWake_Huawei.kext/Contents/
    total 16
    -rwxr-xr-- 1 root wheel 5560 5 Aug 2008 Info.plist

    This appears to be an XML file - do you want it uploaded?

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    Mmm.....strange. Could you navigate in Finder to /System/Library/Extensions/ and see if that kext file actually exists?
    'Orac' - MacBook Pro 13" Mid 2012 - Yosemite (10.10.1)
    'Marvin' - Hackintosh - Mavericks (10.9.5)
    'Holly' - Hackintosh - Mavericks Server (10.9.5)

    iPhone 5S - iOS 8.1.1
    iPad Air - iOS 8.1.1

  11. #10
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    Accord to both Finder and Terminal the file USBExpressCardCantWake_Huawei.kext exists in /System/Library/Extensions. Using ls the permissions and groups for that directory look the same as for all other .kext in /System/Library/Extensions

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