Isn't it because of this...
Function GLGraphics:TGraphics( width,height,depth=0,hertz=60,flags=GRAPHICS_BACKBUFFER|GRAPHICS_DEPTHBUFFER )
in glgraphics.mod?
Function GLGraphics:TGraphics( width,height,depth=0,hertz=60,flags=GRAPHICS_BACKBUFFER|GRAPHICS_DEPTHBUFFER )
in glgraphics.mod?