I've gotten this message before, but not with V3. Like procchi it's usually because of a corrupt .rsr file. I've found this happens to me with clothes when I have a scene open and have to force quit Poser for whatever reason. Usually, deleting the .rsr file in question fixes it. i.e. "Could not load the file "../Geometries/Daz/Clothes/Dress.obj". So, the thing to delete would be the file "Dress.rsr" in the same directory. Be careful though, because some things won't work without the .rsr files. Also, I don't understand the "give me more memory!" message in Poser for Windows, either. I have not used a Mac since OS8, but it was possible with Macs. I think Poser runs to that message when something happens it doesn't understand. :P I am using Poser 4 by the way.