Therocker

Hey. So I'm running RCT from the original disk on my MBP 15" i7 with 10.8.2, running Wineskin 2.5.8 with Engine 1.5.8. The EXE file has been located and I can get the game up and running. Have made modifications to the screen so everything is working as it should... Theoretically. However when I start the game up and click New Game, it prompts me to select a ground, which I do and then it just takes me back to the New Game menu. Any ideas?