Three long days ago I rebooted my computer (Linux Mint 20 Cinnamon) and opened Thunderbird. Instead of my usual mail accounts (an IMAP and 3 pop) appearing as usual, I w… (read more)
Three long days ago I rebooted my computer (Linux Mint 20 Cinnamon) and opened Thunderbird.
Instead of my usual mail accounts (an IMAP and 3 pop) appearing as usual, I was prompted to set up a new profile, and enter my account details. I tried this repeatedly. I had been unaware that TB78 was a major release and had taken the default option to upgrade the software.
I then opened my old default profile folder under ~/.thunderbird and found it virtually devoid of files/data. At this point I thought I had a filesystem issue with lost data. I set about an emergency backup of all my data, and while this was running noticed that my mail was no longer under .thunderbird but under ~/.cinnamon/.thunderbird. (This might explain why TB78 was not finding it, but begs the question why or when it had moved).
Mightily cheered that I do not have a broken filesystem, and all the data, I moved a copy of the backed up profile file to another computer where TB is at 68.10, and opened it. Instead of showing me my mail, it said (in effect) that my profile file had been partially upgraded by TB78, and was no longer compatible. I don't have a recent enough backup to restore it to it's preupgrade state.
How should I proceed from here?
Surely, before making major changes to data structures etc. a clear and loud warning should be given before any changes are made?
How should I recover from this situation and retrieve my mail? I use it extensively as a backup to important correspondence