I didn't make it!
im new to this game.....when i started it up....for some reason all the maps textures are replaced by a black and white grid.......no textures at all.....really annoying...if you can help id gladly appreciate it......-jon
This problem has already been answered here many many times. Before you ask a question search the forum for an answer.
The problem is a corrupt textures file (textures0.pk3), clean your cd's and re-install the game