Found a MSTT reference, expected: ALCH,AMMO,ARMO,BOOK,CCRD,CHIP,CMNY,IMOD,KEYM,LIGH,LVLI,MISC,NOTE,WEAP

This is what I see at the end when I make a merged patch. I'll wonder about it, but eventually go on my happy little way, into the game. I can't tell that anything is amiss, and am wondering if this message is even anything to be concerned about.

That error may be from FNVEdit not being able to process certain entries changed from F3 to FNV (like it does when a challenge entry is read), or its related to something that uses NVSE. I've seen this error pop up plenty of times with no perceivable issues.