Try Temporarily disabling Lightning, or try with a clean profile

To use a clean profile back up C:\Users\<username>\Program\ Files\Thunderbird\AppData\ and move to another location and reload Thunderbird.

Corey 'linuxmodder' Sheldon said

Try Temporarily disabling Lightning, or try with a clean profile To use a clean profile back up C:\Users\<username>\Program\ Files\Thunderbird\AppData\ and move to another location and reload Thunderbird.

linuxmodder, FYI Lightning isn't commonly known to cause crashes. And creating a profile is a lot of work for a user, when posting a crash ID can definitely point us to the cause.

dflanagand,

Please post your crash IDs here. See https://support.mozilla.org/en-US/kb/mozilla-crash-reporter-tb#w_viewing-crash-reports

Thanks for the tips. I'm hoping that one of the crash reports can point at the issue and save me from the pain of a new profile.

The install to the latest version happened on 5/19 and the crashes began immediately thereafter. The lastCrash file has : 1497274029.

I have been reporting the crashes after each event from the Crash Reporter popup.

Here's what I find in ...AppData\Roaming\Thunderbird\Crash Reports\submitted

[Fri May 19 17:14:40 2017] Crash report submitted successfully Crash ID: bp-5b7df9ef-95c9-4ed9-ad3f-f80c10170519

[Fri May 19 17:38:19 2017] Crash report submitted successfully Crash ID: bp-f65492e4-3b32-43cd-a2fd-273f30170519

[Sat May 20 14:51:29 2017] Crash report submitted successfully Crash ID: bp-8aa0b260-754e-44da-9f18-827150170520

[Mon May 22 11:33:12 2017] Crash report submitted successfully Crash ID: bp-1c449ce5-40a2-414a-bbad-ce5250170522

[Tue May 23 09:27:04 2017] Crash report submitted successfully Crash ID: bp-c82bdf84-be80-4488-8b10-616170170523

[Thu May 25 11:34:55 2017] Crash report submitted successfully Crash ID: bp-6822e5b4-d1d1-4c63-9ab8-5fe050170525

[Mon May 29 18:35:54 2017] Crash report submitted successfully Crash ID: bp-e425e3fd-b673-4577-9d7b-c136c0170530

[Mon May 29 18:36:04 2017] Crash report submitted successfully Crash ID: bp-7c65a7be-8681-4d36-a56b-35e250170530

[Tue May 30 09:44:47 2017] Crash report submitted successfully Crash ID: bp-6c9e1151-579d-4c17-8820-b45c40170530

[Thu Jun 1 15:15:13 2017] Crash report submitted successfully Crash ID: bp-8882102f-15e8-421b-816e-6ace80170601

[Thu Jun 1 16:29:43 2017] Crash report submitted successfully Crash ID: bp-fdcbcb9e-f00c-4d58-b7fb-c63650170601

[Mon Jun 5 13:35:43 2017] Crash report submitted successfully Crash ID: bp-cf0958e3-5817-433c-ae7c-2ea210170605

[Mon Jun 5 14:08:35 2017] Crash report submitted successfully Crash ID: bp-f26239c2-4cc4-462d-a8ef-1a2bb0170605

[Tue Jun 6 15:39:12 2017] Crash report submitted successfully Crash ID: bp-d7c2b915-6e1f-4f1c-bc97-33d480170606

[Mon Jun 12 07:27:26 2017] Crash report submitted successfully Crash ID: bp-82f898e8-2658-473e-b4c8-40df50170612

Bad News...Good News I had to reload Windows 7 to fix a failure to boot problem. That required a reload of all of my apps . After I did a clean install of Thunderbird and copied my old profile directory intact from a backup, the problem is gone.

If this is a windows problem or a problem with the Thunderbird update...unknown. But the profile appears OK as those files are same as before. I noticed during the clean install of Thunderbird that a pop up indicated that Lightening is now included with Thunderbird. Previously I had added it as an add-on in an earlier release. That's the only clue I can pass on as to what may have happened on the previous upgrade,

Several of your crashes are @ CompareCacheMatchEntry which is https://bugzilla.mozilla.org/show_bug.cgi?id=1353702