Firefox and Thunderbird ? ! ?

Start Firefox in Safe Mode {web link}

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?

Thanks Fred. Unfortunately, it is still crashing the same way.

Start your Computer in safe mode with network support. Then start Firefox. Try Secure websites. Is the problem still there?

http://encyclopedia2.thefreedictionary.com/Linux+Safe+Mode Starting Any Computer In Safe Mode; Free Online Encyclopedia

If you can't get Firefox to open, you will have to do this the hard way.

https://support.mozilla.org/en-US/kb/mozillacrashreporter Open the file browser/explorer on your computer. Note: You may have to enable Show Hidden Folders / Files. Enter this in the address bar;

Windows: %APPDATA%\Mozilla\Firefox\Crash Reports\submitted Win 7/Vista: C:\Users\<username>\AppData\Roaming\Mozilla\Firefox\Crash Reports\submitted Win XP/2000: C:\Documents and Settings\<username>\Application Data\Mozilla\Firefox\Crash Reports\submitted

Mac OS: /Users/<username>/Library/Application Support/Firefox/Crash Reports/submitted Linux: /home/<username>/.mozilla/firefox/Crash Reports/submitted

The crash report is several pages of data. We need the report numbers to see the whole report.

Copy the most recent 5-7 File Names in the folder. Post the information in the reply box.

Hi Fred and thank you very much. Put both the MacBook Pro (late 2016) in Safe Mode and tried to start Thunderbird and Firefox - both still crashed. Tried running both Mozilla programs in Safe Mode - still an immediate crash. I am using macOS Catalina 10.15 beta 5, build (19A526h). Catalina was fine with both Firefox and Thunderbird until this last Beta 5 update. I also tried the Firefox Nightly 8/2/2019 and latest beta of Thunderbird - still immediate crash. I reported this to Apple Developers as well.

bp-1ca325be-d549-470b-ac16-42e010190802.txt bp-2956a653-ce7c-4cd8-9618-abef30190802.txt bp-0023983b-9a85-42c7-9bf5-0e2460190802.txt bp-79568597-c6b0-411e-92e6-f05a50190802.txt bp-d1157367-5613-4756-9ca7-05ee10190802.txt

paulhem said

Catalina was fine with both Firefox and Thunderbird until this last Beta 5 update

Are you using Mac beta? Please explain. I called for more help.

Product Firefox Release Channel release Version 68.0.1 Build ID 20190717172542 (2019-07-17) OS OS X 10.15 OS Version 10.15.0 19A526h

bp-1ca325be-d549-470b-ac16-42e010190802 bp-2956a653-ce7c-4cd8-9618-abef30190802 bp-0023983b-9a85-42c7-9bf5-0e2460190802

Signature: CoreGraphics@0x197084

Startup Crash True

Crash Reason EXC_BAD_ACCESS / EXC_I386_GPFLT

This is for Sumo's Related Bugs 1570451 NEW --- [10.15] Firefox and Thunderbird crashes on start in MacOS 10.15 (Catalina) dev beta 5 19A526h

Comment from bug report; https://bugzilla.mozilla.org/show_bug.cgi?id=1570451#c13

Apple responded indicating this is a macOS bug and they'll be fixing it. We don't have a time frame yet.

Fred. I am really grateful for all that you have done. Thank you! Paul

Hope this does not last long.

Another user with the problem; https://support.mozilla.org/en-US/questions/1266012

And another user; https://support.mozilla.org/en-US/questions/1266084

Hopefully, we will soon be able to enjoy Mozilla products on Catalina again, soon.

See also:

• Bug 1563631 - [Mac 10.15] Firefox 68 and 67.0.2+ cannot be opened on macOS 10.15 Beta

(please do not comment in bug reports
https://bugzilla.mozilla.org/page.cgi?id=etiquette.html)

cor-el:

Bug 1563631 may have similar describe similar issues. However, I didn't have any issues with Firefox or nightlies until I installed macOS 10.15 beta 5 (Build 19A526h). Prior builds worked well with Firefox and Thunderbird, until I installed 19A526h.

And yet another user; https://support.mozilla.org/en-US/questions/1266242

And yet another; https://support.mozilla.org/en-US/questions/1266263

And another; https://support.mozilla.org/en-US/questions/1266368

https://support.mozilla.org/en-US/questions/1266354

I look forward to apple fixing their stuff up. I have email I wish to view and wonder when!!!!!

I have this same problem. Worked for hours trying various workarounds. Nothing works. Hope it gets fixed with a new beta version.