Skullgirls pc game crashing when altering files Thread

Skullgirls 2nd encore is a game on steam, the problem when it comes to the modding is that the game crashes if I attempt to alter the devs and characters related GFS files.For the exportation I use Skullmod, specifically made for the exportation of those files.So I would like to know what exactly is preventing the alterations from going through without crashing. I think it's important to mention that I'm simply swapping files between versions that have had no changes other than visual ones.

Edited by: RTFE