Problem with exe.

[n0ctur1a]

Hello...i started playing yesterday on this server and when i downloaded the client i tryed to open mu with Battlezone but for some reason it was crashing all the time after i was pressing Run...I can only use maintest and i think this is the reason i cant use Windowmode program aswell...I would appreciate some help with the exe problem :) (i tryed to update and nothing changed)