Yeah, its kind of impossible to run the game. Patching it gives and error, while ignoring that and proceeding leads to the ROM not even opening on any of the emulators I've tested.
Yes, I've used a number of different Black 2 ROMS to ensure this.
So I did get it to work after scrounging about for an incredibly specific Black 2 ROM. Pretty sure I burnt through three others in the process though.
Side note, the game itself is more of a reskin of BW2's story than what its advertised itself to be. Gladion's kinda blatantly Hugh, even down to the event with his sister's Purrloin.