Pokémon Model Ripping Project

[Charmaleizard]

1. SPICA and I aren't getting along.  it gives me an error any time I try to open a file - "Object reference not set to instance of an object"

2. Why are all the sun/moon battle BG in one bin?  How can I unload the bin? Ohana and SPICA aren't liking me here.

EDIT:
For reference, I am talking about the unpacked romfs I unpacked. I can open the file containing the models, and inside is one bin. The bin should contain all the BGs, but I can't unpack it. Ohana also gives me an error about trying to upload too many models when I try to open it.