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TypeError: CCfctoolbar18b8f08d62fe4dfcad6c9ce46515d5ec['@mozilla.org/extensions/manager;1'] is undefined pops up when a new Firefox 4.0 Beta window opens

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  • 163 have this problem
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  • Last reply by TonyE

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Whenever a new Firefox 4.0 Beta window opens, the following error message pops up:

TypeError: CCfctoolbar18b8f08d62fe4dfcad6c9ce46515d5ec['@mozilla.org/extensions/manager;1'] is undefined

Closing the error popup allows things to proceed normally.

All Replies (1)

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I suspect you may have an incompatible add-on that is causing the error. Try the procedures in the Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems article.