Client crashing! ;w;

[Marabelle]

Maybe someone here can help me...
You see I seem to be having trouble with my RO client. I can get to the patcher without problem but when clicking 'start' the game screen loads for three seconds (no black screen, it is transparent with)... then it crashes without warning. It refuses to load. I've been having this issue for a few days now. Restarting the computer is not working. I'm on vista (if that helps any; though I already adjusted the compatibility setting the first day I installed RO...)

Help would be greatly appreciated! Thank you.