Thunderbird 60.9.0
Recently added mmsAutoCorrect - almost a week ago (Post here - http://forums.mozillazine.org/viewtopic.php?f=39&t=3054951)
This evening, reason unknown, every time I click on Write, Reply, Reply All or Forward, Thunderbird crashes. I've restarted with AddOns disabled (Help > Restart with Addons Disabled) and it seems to work fine.
I re-started again, with Addons 'enabled' and still crashed. So, I restarted yet again, disabled AutoCorrect, restarted and Tb seems to work OK again.
In case of relevance, other Addons are Compact Header, Quicktext and ReminderFox. I've tried disabling all but AutoCorrect but Tb still crashes so I've concluded the problem is with AutoCorrect.
Would the 'experts' with AutoCorrect mind helping me to discover and, hopefully, recify the problem, please?
@morat in particular ...

Many thanks. Any help is verymuch appreciated