Mac OSX 10.9.3
Crossover 13.0.1
So I installed the GOG version of PTB which was relatively simple. I then created the commands in the menu linking to popTB.exe and popTBUW.exe as instructed (instead of the d3d versions.
I also set "emulate virtual desktop 800x600" in the bottle control panel.
When I start the game, however, it occupies the whole screen and the screen goes completely white. The sound still works fine, so I know the game isn't dead, but the graphics aren't working.
If I then select "use legacy X windows system", and do it again, the game appears in a window (as it should have in the first place) but the screen is completely black (and the music plays in the background).
I really want to get this game working! It was my childhood favourite!