(Running Windows 7)
I updated my Tor Browser Bundle to 4.0.3 yesterday. Initially, I tried to overwrite the existing install (making a backup copy beforehand). When I try to launch it, I get "Tor has unexpectedly exited".
I then attempted a clean install; still fails. I tried running my backup copy; same result.
I also have a separate instance of Tor running through Vidalia - which works fine and hasn't had any problems before.
Here's what I've been able to gather from the log, which seems to be the point where it's failing:
Jan 15 05:36:12.000 [notice] New control connection opened.
Jan 15 05:36:12.000 [info] handle_control_authenticate(): Authenticated control connection (184)
Jan 15 05:36:12.000 [info] connection_control_reached_eof(): Control connection reached EOF. Closing.
Jan 15 05:36:12.000 [notice] Owning controller connection has closed -- exiting now.
A few times, it seems to have actually reached "Bootstrapped 100%" before dying.
I've tried many things, including disabling AV and restarting the PC. I'm at a loss as to what is causing this.