IjonT (2/28/2017)
The folder containing the fbx and key file has a materials subfolder ending in .fbm (but with a different name than the fbx file itself). I can actually manually load the textures from the materials folder and they appear correctly on the models, but it's a lot of trial and error as the texture names are nondescript. I have checked and unchecked 'import texture settings' to external textures with no effect. I'm sure I'm missing something simple, but can't figure out what!The name of the folder should be the same as that of the FBX file, as far as I know.
There is a free Autodesk FBX converter (
http://usa.autodesk.com/adsk/servlet/pc/item?siteID=123112&id=22694909) that includes a viewer. You could try to load your character in that. If it also shows white you know it's not 3DXchange.
The converter lets you save in ASCII format, which would allow you to check the texture references. The references might be local to the person who created the file in which case you would also have no access to the textures.