Hi please try a just the 59. or just 58. Disregard the minor updates and see if that works out. https://www.mozilla.org/firefox/all/ Full Version Installer Suggest delete all files/folders on your system for Mozilla Firefox except profile. Make a copy of profile though. then delete it. new profile works then you can transfer files from a previously used profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over the problem. Never work with original files.

• https://support.mozilla.org/en-US/kb/recovering-important-data-from-an-old-profile
• http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

Please let us know if this solved your issue or if need further assistance.

Try to start Firefox in Safe Mode to see if that works.

• Mac: hold down the Options key while starting Firefox
• Windows: hold down the Shift key while starting Firefox

• https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode

Try to create a new profile to test if your current profile is causing the problem.

See "Creating a profile":

• https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles
• http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Profile_issues

If the new profile works then you can transfer files from a previously used profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over problems.

• http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

See "Creating a profile":

• https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles

THANKS !!!!!!!! using Terminal and the magic formula /Applications/Firefox.app/Contents/MacOS/firefox-bin -P I was able to enter the firefox profile and I was able to start the application ! Now I will see if it will work well as before….

Torzo