Added 3 minutes later
Have you tried placing the MB file I sent in your editor and trying to view the model?
Added 7 minutes later
Whoa, I missed a step during the FBX creation process... it says that the MODEL also needs to be linked to the GLOBAL!!! I honestly don't understand this at all... it seems to be a quirk of Heroes 5.
Added 1 minute later
Why would a model that has a SKIN need to be linked to the root bone of the skeleton, which the skin is attached to? This is terrible... And I don't think there was any linking of the model to the bone when I extracted models FROM the game... maybe the editor fixes this automatically?
When I load models, I can put a bunch of models into one MB file at once, and then load them one by one, entering different names in the window