If I uninstall and reinstall

[i_am_jim]

If I uninstall and reinstall TB do I lose my accounts and their configuration?

[DanRaisch]

You will not lose your data if you uninstall only the program but leave the profile in place.

Clear the browser cache and the Windows Temp directory.
Download a new copy of the full installer from http://www.mozillamessaging.com/en-US/thunderbird/all
Delete the directory C:\Program Files\Mozilla Thunderbird (or it might be C:\Program Files (x86)\Mozilla Thunderbird
Run the installer.

Your saved messages, address books, settings, passwords, etc (if any) are stored in a different directory from the program files and will not be removed by deleting the directory identified above.

This thread http://forums.mozillazine.org/viewtopic ... 5#p5239885 has a more detailed version of the above instructions if needed.

[i_am_jim]

Thanks

[DanRaisch]

You're welcome.