I have the same problem with exactly same logs, and theres no error message, wot just closes instantly when i log in to tankleader.
[2013-01-06 03:01:05.482] Targeting mode: ByHealth
[03:01:05.485] OS Culture: da-DK
[03:01:05.485] Logging in...
[03:01:05.523] [Debug] Finished exporting images to C:\Users\jesper\AppData\Roaming\TankLeader
[03:01:05.595]
[03:01:05.598] Logged in! Initializing.
[03:01:05.645] ----------------------------------------------------
[03:01:05.645] No valid WoT instance selected!
[03:01:05.645] Make sure WoT is running and you are in the
[03:01:05.645] garage before starting TankLeader.
[03:01:05.645] ----------------------------------------------------
[2013-01-06 03:01:49.905] Targeting mode: ByHealth
[03:01:49.906] Logging in...
[03:01:49.908] OS Culture: da-DK
[03:01:49.945] [Debug] Finished exporting images to C:\Users\jesper\AppData\Roaming\TankLeader
[03:01:50.052]
[03:01:50.055] Logged in! Initializing.
[03:01:50.103] TankLeader v1.0.392.84 started
[03:01:50.103] Using WoT with process ID 2960
[03:01:50.103] Executable Path: C:\Users\jesper\Desktop\Tankleader\TankLeader.exe
[03:01:50.494] [Error] WoT exited!