Every time I restart TB, this same thing happens: (All my emails are still available) I choose a folder such as Local Folders and the email list appears for that folder. The preview screen shows the contents of the first email I click on (but strangely, the address header is missing, only the text of the email appears). If I double click to open it, this email list disappears and I can't get it back. ALSO, I can't now click on a different folder to see its contents, the cursor moves but nothing changes in the windows - still an empty list. The app is locked now and I have to shut down TB. When I restart, its the same.