You also get that error if you try to load a character file and you're missing it's cooresponding geometry file OR if you have the geometry file, but its accompanying rsr is corrupted. If you're sure you have the geometry (obj) file you can go into your Geometries directory, locate the obj, and delete its corresponding rsr. That way, Poser can create a new, clean one next time you try to load the file. Also, to find out the filepath to your obj file, you can open up the cr2 file in Notepad. This is what I've discovered using Poser 4. I'm not sure what would be different with P3 but I thought I'd offer the suggestions.