So I installed Morrowind GOTY edition off steam, patched it, unofficial patched it. Ran MGE and added all the mods I wanted to use.

Everything seemed to be fine, I launched the game, opened "Data Files" and turned them on.

Game launched and everything worked fine. I played for a few minutes just setting up a character, etc and then quit out to look at a few other mods.

Now, whenever I open the launcher and try to open "Data Files" the game crashes. If I just launch Morrowind everything is fine and my active mods are loaded, but I cannot access the "Data Files" menu to enable/disable mods. Anyone know why this is happening?

Nevermind, a re-install fixed it and now it runs flawless.

Self solved.