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I click the "Tools" tab, then click the "Add-ons" tab. If I then click anywhere on the "Add-ons" dialog box, the dialog box immediately closes. I can't install plug-ins or add-ons. However, this happens only with my account. Other users have no such p

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I click the "Tools" tab, then click the "Add-ons" tab. If I then click anywhere on the "Add-ons" dialog box, the dialog box immediately closes. I can't install plug-ins or add-ons. However, this happens only with my account. Other users have no such problem. I have also tried going to the "Add-ons" dialogue box through "Tools" then "Options." I still cannot get into the "Add-ons" tab; the dialog box closes. I have tried using the keyboard instead of the mouse; same problem.

This happened

Every time Firefox opened

== I am unsure what caused it. I have tried re-installing firefox.

I click the "Tools" tab, then click the "Add-ons" tab. If I then click anywhere on the "Add-ons" dialog box, the dialog box immediately closes. I can't install plug-ins or add-ons. However, this happens only with my account. Other users have no such problem. I have also tried going to the "Add-ons" dialogue box through "Tools" then "Options." I still cannot get into the "Add-ons" tab; the dialog box closes. I have tried using the keyboard instead of the mouse; same problem. == This happened == Every time Firefox opened == I am unsure what caused it. I have tried re-installing firefox.

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Do you have that problem when running in the Firefox SafeMode? http://support.mozilla.com/en-US/kb/Safe+Mode Don't select anything right now, just use "Continue in SafeMode."

If not, see this: http://support.mozilla.com/en-US/kb/troubleshooting+extensions+and+theme...