Firefox 36.0.1 on a Mac running Yosemite 10.10.2 crashes when you try to open the Add-ons Manager

I am running Firefox 36.0.1 on an iMac with Yosemite 10.10.2. Firefox works fine except that it freezes and I have to force quit the application whenever I try to choose modules in the Tools menu. I've never had this problem before. This problem happened for three consecutive days with my iMac rebooted several times. The same problem occurs when you try to access the modules from the open menu icon. Does anyone have a solution? Thank you!

If you put this in the url bar: subject: addons
This also happens? If this isn't the case, add the back icon and remove it to reset.

It also happens in Mode safe?

Tags: Firefox

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