My gmail was linked to thunderbird, yesterday it stopped working at now I can not open calendars at all on TB or create new events. If i click events and tasks>new event or >new task, nothing happens If i try to open the calendar using the little icon/file>open etc nothing happens I was running Lightening and Provider for google calendar, I've removed and reinstalled these and restarted, both add ons give me the option to disable so I assume they are enabled.

I can still access my calendar via gmail but would be nice to have it back on thunderbird!