BirdieSync

Thunderbird crashes if I try to remove a calender from the list.

try it. add a new calendar try to delete it afterwards, and thunderbird will crash without the calendar being removed. Workaround now: disable bidriesync, restart thunderbird, remove calendar, activate birdiesync in addons and restart thunderbird.

Patrick

The same here mates. Using the workaround above.
Regards

Thanks for reporting this problem. It was fixed in version 1.6.3.1.