I think I remember reading somewhere that Poser started out as a Mac application. If they made the pc version after the Mac one they probably reused part of the code. The program Macinstaller also puts these numbers into the cr2:s etc that it installs. This is what it might look like: textureMap "V3BodyMHi.jpg" -1 987626 bumpMap "V3BodyBHi.bum" -1 987626 I suppose the first number (-1) is for the hard disk as all files I've seen have the same number. The second one varies, but here you can see that these two files are in the same folder. Maybe they put these zeros to some other use in Poser 5 on the pc. I'm eagerly waiting for the Mac version ... :)