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... and the only way to restore them is to delete the folderCache.json, session.json, xulstore.json files from my profile directory. But each time I shut down Thunderbird and restart it, the same problem returns and I have to start over.

As this causes Thunderbird to lose all customizations to folder display, column displays, color badges, etc, and requires Thunderbird to download all message headers in my 6 email accounts, it's wasting a ton of my time.

All the accounts are still intact and it even says it's downloading email for each inbox on startup, I just can't see any of it because there's no folders displayed on the left side-bar.

And mind you, this was just a "upgrade"... when I tried to migrate my default profile to another computer (new workstation) it wouldn't load the proper profile without doing the -p flag on the executable and then after, has this same problem where it first displays proper accounts/folders but then on restart loses it all.

Luckily I found another users post online about deleting those internal cache/config files (for a completely unrelated problem with an older version of tbird) or I'd have been completely stuck.

Anyone have any suggestions on migrating BACK to the previous most stable build of pre "Supernova"? This thing isn't fully baked IMO.

And also, is there a better way to submit massive errors like this to the developers?

Thanks...