Yes, I only check the box for NPC Enchant Fix in SUM and i can't speak with some NPC and loot some corpse. I wait the release of frostfall 3.0 and I reinstall all the guide with the latest update of mods. If I have the same problem again, I come back here. Some forums say that the problem comes from of string localization, I try to overwrite the string of my language to english string before apply patch with SUM but nothing. So i don't know where comes the problem but I find it weird that it would come from the localization . Sorry I don't know if there is a special handling to do for switch the language of Skyrim. You're welcome ;) PS : Sorry if I make mistakes in English.