I have wondered about this compatibility issue myself, I am a PC user. One issue it seems is that if Poser files are created on a PC path statements are written in the standard Win9X convention, that is delineated by back-slashes "", I think that Mac paths are delineated by colons ":", as the PC version of poser can read the colon delineated paths these should be used for both PC and Mac distributions. I think there is another issue, though I am a bit fuzzy on this point. I believe that PC's and Mac's use a different way of ending a line in a text file, PC's use a carriage return and line feed, I think and Mac's use only a carriage return. What happens if you try to read a carriage return only text file into a PC version of Poser I don't know. I'll try the experiment and see if my PC blows up!