Alright, so I changed the face of one of the crashing characters which worked. However, another character whose face I changed had no change. I deleted the character (through the warband multiplayer menu, not crpg site) then made a new one with the same name. I managed to log in but spawned naked with level 0. I tweaked his face, relogged and crashed ><
edit- I got as far as the faction selection screen for the latest crash