Latest imposed download has failed, causing a reboot loop that won't resolve. Since downloading and installing latest version (68.5), I rebooted as requested and there has been a failure. The shut down and reboot went as planned, no problems, but all attempts to open Thunderbird have failed with the attached message box appearing. Attempts to uninstall (in order to reinstall) have failed, with this same error message appearing. I cannot run the program, I cannot open it, I cannot uninstall it, it won't install as expected, and it won't re-install either. This message keep appearing on a continuous loop, at every reboot, and at every attempt to do anything with TB. Please help! - W