My friend is trying to use LaTeXit on Mac OS X 10.6, but he is running into this error when he tries to run the program.

gs not found or does not work as expected
the current configurations of LaTeXit requires gs to work.

He has downloaded the MacTex installer and successfully installed it on his computer. TexShop works find, but I have no idea why this error would be coming up.

Any help would be greatly appreciated, thanks in advance.