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Unable to open firefox 45.0.1 in mac os x 10.10.5 on an imac.

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I am running an iMac, os x 10.10.5. When I attempt to launch the app the firefox Icon "bounces" in the dock and finally stops. Nothing happens. If I try to restart mac I have to force quit firefox to complete the restart. I have uninstalled Firefox several times and deleted the default profile in the library. Prior to the new update (a few days ago), it worked perfectly.

I am running an iMac, os x 10.10.5. When I attempt to launch the app the firefox Icon "bounces" in the dock and finally stops. Nothing happens. If I try to restart mac I have to force quit firefox to complete the restart. I have uninstalled Firefox several times and deleted the default profile in the library. Prior to the new update (a few days ago), it worked perfectly.

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Hello jridberg, probably it is the Bug 1258515 - After Firefox update, Macbook won't shutdown.

please have a little patience till the bug fixed.

(please do not comment in bug reports)

thank you