Jim Roepcke's weblog have browser, will travel (est. 1999)

6Dec/09Off

VMWare Fusion 3: vmmon.kext was installed improperly

Here's a tip if you're having trouble installing/running VMWare Fusion 3 on Mac OS X 10.6 Snow Leopard.

The installer displayed this error message:

System extension cannot be used

The system extension "/Library/Application Support/VMWare Fusion/kexts/vmmon.kext" was installed improperly and cannot be used. Please try reinstalling it, or contact the product's vendor for an update.

Turns out I still had remnants of VMWare Fusion 2 installed. I ran the Uninstaller that came with VMWare Fusion 3, then ran the installer again... the install finally worked!

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Roepcke Computing Solutions

Jim Roepcke specializes in development and mentoring for iPhone and Mac OS X / Cocoa, WebObjects, and Python.

Contact Jim for more information.

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