So, I was trying to get TPT to work on my Mac computer (I usually use a PC, but the stupid thing crashed), and I keep getting a "The application Powder Toy quit unexpectedly." error. I tried running it through terminal too, and it did the same thing. I tried compiling the source code, but it will not work. If anyone knows anything about this, please tell me. BTW, I use Mac OS X Leopard, if that helps.

I found it. I did not have the right Mac OS X. I needed snow leopard, not leopard.