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How to get rid of an error message?

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New User

How to get rid of an error message?

I downloaded the new Firefoxy4, and each time I open it I get a message window that says: Type Error:Components.classes[@mozilla.org/extension/manager:1] is undefined. and asks to press the OK button. When pressed Firefox 4 opens. How do I get rid of the error message?

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Support Forum Moderator

Re: How to get rid of an error message?

This is probably due to an add-on that is not compatible with Firefox 4. For details of how to troubleshoot that see https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes

2 REPLIES
Support Forum Moderator

Re: How to get rid of an error message?

This is probably due to an add-on that is not compatible with Firefox 4. For details of how to troubleshoot that see https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes

New User

Re: How to get rid of an error message?

Thanks TonyE That worked a treat. Cheers Lawandra