i think you do need metal slug4nd,what about metal slug5 are you not interested in that one. I put that in there with it, but it doesn't seem to make a difference with it locking up, but now the filtering seems to be working properly, so... I really don't know. Well, I actually have the metal slug 4 and 5 xbox game, I was just trying to get them all to run out of the same area. So having 4 and 5 running through FBA isn't that big of a deal for me, other than I would rather have it look clean, and just use the bookmark system to point to all my emulated games. But that might take me a long while.