I  recently purchased content that has materials in mt5 files. I get a "bad file" message when I try to use them. This is the second time( different product) this has happened, I can't use the content. I have Poser8 on a Mac. The files have been installed according to the "read me" instructions. I have contacted the content creator, it does not appear she has the answer as to why my computer can't read the files. Smith Micro says there shouldn't be a problem reading mt5s on my computer, and I should go back to the creator of the content. Has anybody had this problem?