Hello,

You have already uninstall Firefox ?

Normaly just uninstall and reinstall fix the problem

Bye

I've already tried that. About three times. The first one I just reinstall it and didn't opened, the second one I restarted my mac, then reinstall it and still didn't opened, and the third one I reinstall it, then restarted my mac, and then tried to open firefox and still didn't open.

Hi SophHOTT, sorry to hear about this problem.

Could you test in Firefox's Safe Mode? In its Safe Mode, Firefox temporarily deactivates extensions, hardware acceleration, any userChrome.css/userContent.css files, and some other advanced features to help you assess whether these are causing the problem.

Hold down the option/alt key when starting Firefox. (On Windows, hold down the Shift key instead of the option/alt key.)

A small dialog should appear. Click "Start in Safe Mode" (not Refresh).

Any improvement?

Tried that. The "Star in Safe Mode" dialog doesn't even appear. The icon just appears briefly on dock and then disappears. Nothing really happens.

I tried to find any posts about this as a more general problem after that update but didn't find anything yet.

https://discussions.apple.com/search?page=1&q=firefox&content=filterDiscussions&time=week

Look, the last think I tried was the page https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles#w_start-the-profile-manager-when-firefox-is-closed and the section "Start the Profile Manager when Firefox is closed". /Applications/Firefox.app/Contents/MacOS/firefox-bin -P (or equivalent) doesn't work to open Profile Manager when Firefox is closed, I always get the message "The patch directory path is not valid for this application" on Terminal... And I'm sure that firefox isn't open...

SophHOTT said

/Applications/Firefox.app/Contents/MacOS/firefox-bin -P (or equivalent) doesn't work to open Profile Manager when Firefox is closed, I always get the message "The patch directory path is not valid for this application" on Terminal.

Hmm, patch directory, sounds like it could be a "staged" update waiting to be installed. I am not sure how you could get rid of that on Mac. On Windows, it would be here:

C:\Users\username\AppData\Local\Mozilla\updates

There is a path mentioned in this thread:

https://support.mozilla.org/questions/1157427#answer-961667

~/Library/Caches/Mozilla/updates/Applications/Firefox/updates/

Since it is a hidden folder path, there is a trick to viewing it mentioned in the same post.

Hopefully if you clear that out, the terminal method will work.

jscher2000 said

SophHOTT said

/Applications/Firefox.app/Contents/MacOS/firefox-bin -P (or equivalent) doesn't work to open Profile Manager when Firefox is closed, I always get the message "The patch directory path is not valid for this application" on Terminal.

Hmm, patch directory, sounds like it could be a "staged" update waiting to be installed. I am not sure how you could get rid of that on Mac. On Windows, it would be here:

C:\Users\username\AppData\Local\Mozilla\updates

There is a path mentioned in this thread:

https://support.mozilla.org/questions/1157427#answer-961667

~/Library/Caches/Mozilla/updates/Applications/Firefox/updates/

Since it is a hidden folder path, there is a trick to viewing it mentioned in the same post.

Hopefully if you clear that out, the terminal method will work.

Thanks. I just deleted the file that was on ~/Library/Caches/Mozilla/updates/Applications/Firefox/updates/ and I was able to open firefox again. It's finally working normally.

Thank goodness! And thank you for reporting back.