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how do I retrieve my calendar?

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I opened thunderbird and my calendar and all my events are gone. I can't even add a new event... Can I retrieve my calendar and events?

thanks

I opened thunderbird and my calendar and all my events are gone. I can't even add a new event... Can I retrieve my calendar and events? thanks

Chosen solution

This happens when you update Thunderbird and not Lightning. There are matched version that need to be running. Lacking the info of what versions you have I can only suggest that you do to the add ons page and get the correct version of Lightning.

https://addons.mozilla.org/en-US/thunderbird/addon/lightning/?src=hp-dl-mostpopular Click the View Other Version link to see what version goes with what version of Thunderbird.

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Chosen Solution

This happens when you update Thunderbird and not Lightning. There are matched version that need to be running. Lacking the info of what versions you have I can only suggest that you do to the add ons page and get the correct version of Lightning.

https://addons.mozilla.org/en-US/thunderbird/addon/lightning/?src=hp-dl-mostpopular Click the View Other Version link to see what version goes with what version of Thunderbird.