After meticulously following the steps to get it to run in Windowed mode, I find that the game's graphics are totally screwed up on my machine (2.16 Ghz Core 2 Duo MacBook with 128 MB ATI Radeon Mobility X1600). Essentially, everything is rendered as translucent blue boxes; it's as if the game models are being rendered, but the textures aren't being drawn. Does anyone have any suggestions on how I could fix this? Maybe there are some settings I need to tweak? I've kept all of the graphics settings at their defaults so far.