I have consistently noticed that any files that are exported to the "Material3," "MaterialInstanceConstant" and "TextureCube" folders are exported as Microsoft Office Access Table Shortcut files, all of which are 0 KB. Am I doing something wrong during the export, neglecting to compensate for these file types or is umodel.exe simply incapable of handling these specific files?
I'm never exporting anything in Microsoft Office formats. All materials are exported as text with .mat extension. You can view them with any text editor (notepad), but really these files are created for my ActorX Importer plugin.
Note: I export everything using the -md5 extension (not the right word, but you know what I mean) due to 3ds Max 2012's inability to handle ActorX animations.
I don't know what you mean - md5 option is obsolete and you should not use it, use psk/psa format instead. Max 2012 has no problems with ActorX animations. Please tell me more about your problems, I think you're doing something wrong.