Vairesh: I've used dozens and dozens of marketplace and freestuff items marked "PC Only"--if it weren't for macconverter I'd have practically nothing in my libraries that didn't come with the program. Almost all of these "PC Only" products work flawlessly when converted, so naturally my expectation was that yours would, too. Of course that's not your fault--but maybe in the future you might try to find a beta-tester who uses a Mac, and if the MAT files don't load properly, or whatever, you can state that clearly in your description copy. For most of us Mac users, "PC Only" means only that the product was not written for mac and must be converted. I'm dissatisfied, true,and will try to get a refund (not real happy with the Lula tex map, either--looks like helmet-head except in extreme close-up). But the real issue for me is that I might not have bought them in the first place if the vendors weren't so busy screening out any-and-all negative product feedback--perhaps some other disgruntled Mac user might have warned me off. None of this is your fault, I know--but trust me when I say that to most Mac users, the "PC Only" disclaimer is all but meaningless.