CANT LEVEL UP MY POKEMON IN POKEMON WHITE VERSION FOR NDS

Hey guy's, Im sort of new to ROM's and all this fun stuff. Anyway, I tried playing Pokemon White version last night, and it wouldn't let me level up my Pokemon at all. (Gain Experience). I even tried to do around four battles. Any idea's on what to do? I am using the NDS Emulater DeSmuMe

You need to use a patch for the game in order to get rid of the anti-piracy. I don't really know much about emulators so you could try looking up the solution online somewhere.

Remove the Anti Piracy with DS-Scene ROM Tool.Try downloading it from filetrip.net