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installed Thunderbird 31.4.0 and lost calendar entries

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I installed Thunderbird 31.4.0 and can no longer see my calendar entries, am not able to enter new items, nor do the reminders for the calendar entries pop up.

I installed Thunderbird 31.4.0 and can no longer see my calendar entries, am not able to enter new items, nor do the reminders for the calendar entries pop up.

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You failed to upgrade Lightning when you upgraded Thunderbird. The two need to match. Upgrade Lightning to match the Thunderbird version you are running and your event data will return.

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I am running 31.4.0 Thunderbird (Linux) and Lightning 3.3.4 and am still having the same problem OP mentions. The calendar is completely not dysfunctional.