Stuck on beginning screen while entering battle

Yoott: I would agree with the above posters, I used to get that when i ran mods after a patch and forgot to update even one of them it would freeze or CTD right at map load in.
Easiest way to test is move you res mods folder somewhere temporarily, restart the game go into a battle see if it works, if it does then its a definite mod issue as that folder is empty by default on install.
If it does not load still then maybe a file got corrupted.