Originally Posted by DEADP00L
try updating your graphics card drivers. or load up JA in safe mode and in the options, instead of using OpenGL, choose Direct 3D for rendering.
I'm quite sure there is no Direct3D mode for JA.
Updating your drivers might do the trick, but it looks like it's having trouble setting the graphics mode, 640x480. Perhaps you could try running it in windowed mode. make a text file in your GameData/base directory called autoexec.cfg and inside that, place this line
see if that helps.