If you saving as "generic_item.mesh" you should add model via "file/add model". If you adding model via "modify/load generic_item" you should either choose "generic_item.mesh" file either save renamed bones model to "generic_item.mesh.ascii".
Well, I downloaded. It was the model without bones. I went to see in the "data" folder and there was some itens with the name "Dante". I created a folder and put those itens in it. So I opened XPS and it was everything there. But the bones were without a name ad almost all of them doesnīt move anything. The only I found is a bone of the coat and the Root Ground