Hi everybody i'm new on this site and i have a problem with RCT3 platinum on mac os lion. When i place a tree in a park, i cannot see it without unticking the 3D trees option. So my trees are in 2D and i want them in 3D to make nice scenery ! I can't find the problem's origin, can somebody help me please ???? It will be very cool

The easiest option would be to buy a PC.

I usually wouldn't do this until I've been here longer, but whatever.
Heres the help:
Oops, I just posted a LetMeGoogleThatForYou. But I always read through, and there are no answers.
I'd try going through the options.txt manually and checking the LOD levels for foliage.

A pc would be better like windows But anyways welcome

It is true. I have a PC and a Mac, and the PC version is much easier to work with!