Im actually having trouble decompressing the BL2 upk's, I really dont have any idea whats going on. Id love to test it and the expansions with UEExplorer, it doesnt matter if its a steam copy does it?
Thanks for the response Eliot. I've since learned that only the Xbox360 uses these ScriptPatch files, they're Script Patch Profiles or something like that.
The reason the Xbox360 uses them is because MS limits the title update size to 4mb, PS3 and PC do not have this limit, so they don't create ScriptPatch files, they just substitute the new .u / .xxx in the new title update.
I've been digging through the UE3 source leaks trying to find something related to these script patch files, but so far, I've found nothing.
I should have learned the lesson long ago, (if you want to mod something, do it on PC or PS3), there are always extra steps or finicky things with the Xbox360. :/