Lightning 1.3 incompatible with Thunderbird 10.0.2 Rated 4 out of 5 stars

I love Lightning, but I'm incredibly annoyed that Thunderbird was able to automatically update itself and completely remove all signs of Lightning without any warnings whatsoever.
I have already missed one appointment today because I got no notification, and have several upcoming events where important details were stored with the event. Until this mess is sorted out, how can I access my data?

This review is for a previous version of the add-on (1.3).