Upgraded to MozillaThunderbird-60.0-lp150.3.14.1.x86_64. Now it crashes with my profile.
New profile startup ok, it’s not a problem of pluggins
Downgrading to old one MozillaThunderbird-52.9.0-lp150.3.8.1.x86_64.rpm startup again without any problems.
What files should I delete without modifing my configuration (like global-messages-db.sqlite)
How can I turn on debugging to help?
don’t delete anything
the first thing to do is back up your thunderbird profile you can use an addon like import export tools https://addons.thunderbird.net/en-US/thunderbird/addon/importexporttools/
although the thunderbird developers wanted to keep the addon framework alive the fact that tbird 60 is based on Firefox 60 means a lot of old addond don’t work it could all be an old addon you have installed disable installed addons and try again
to see what’s going on start thunderbird from a console window and see the output messages
as far as I know thunderbird 60 is stable and shouldn’t crash