I upgraded from version 91.13.0 to version 102.2.2 this morning. I am using Windows 7 Pro. After upgrade, TB lost all my Favorite folders and my extra tabs. When I tried to get email on one account, that has filters, it said the folder wasn't there but it it was. I could not get email at all on my main account. I closed TB and restarted and was able to set up new tabs and Favorites as best as I could remember them. Still could not get email on my main account. I tried send a message and could not do Send Later at all. I finally rebooted and can now get my messages if I click Get all Messages, and it said it was downloading hundreds of messages from a gmail account. I didn't really download all of those though. I select when I want to get messages from different accounts so don't want to get all of them that are set up as some are rarely used. I still cannot do Send Later. I often compose a message and do Send Later as I may want to change it or send a bunch at one time. I have email going back many, many years and get many emails every day that need to be answered. This is not a reliable upgrade. I wish I hand checked before upgrading as I rarely have had issues with TB upgrades.

Barbara