Recently eM client v7 started to crash. It goes through the checking process when re launching the app and crashes immediately again.
I have re-installed v6 leaving the eM client folder intact in AppData but the problem persists.
I have noticed that deleting the file check_db.txt after a crash (even though it is blank) allows the application to start. After this the last time it worked normally for days.
But if I receive a meeting request email the application crashes again and will keep crashing when attempting to open it.
My guess would be that the crashes are related somehow to the calendar.