Spring 89 terrain is white;[SOLVED]

[zgames]

strangely, the map texture is only white. this happens on all maps.
units,trees,etc. render correctly.
I'm not using shadows and water is set to basic.

additional info:
ATIhacks option is enabled, unknown weather necessary(Radeon 9550 xxl)


EDIT:
"advmapshader" option disable -> the map now works.
atihacks doesn't seem to do much.

if anyone has a problem with white textures try changing advmapshaders from -1 to 0