System extension cannot be used – _ClassicNotSeize.kext was installed improperly and cannot be used.

As you may know from reading this blog, I’ve recently purchased a Mac, and love it for the most part. However, I recently was updating iTunes and I received the following error message:

System extension cannot be used
The system extension “/System/Library/Extensions/CNQL1213_ClassicNotSeize.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the products’s vendor for an update.

I’ve never seen this error before, I’m unsure if it has anything to do with my recent update to Mac OS X Snow Leopard. I was upgrading from iTunes 9.0 to 9.1 when the error occurred. Here’s the biggest problem… I can’t find the solution because errors on Macs are so few and far between as compared to similar issues with PC’s. I’ve tried Googling the error and cannot find anything that seems to be related. After that error message, the iTunes update continued, and apparently installed successfully because I got the following message: The update was installed successfully.


This issue is potentially caused by a Canon scanner driver issue. If you have a Canon scanner, particular any of the LiDE series Canon scanners, you may want to check and see if you’re able to update/remove this driver.

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