Problem solved [EDIT2:] I used BOSS to reorder my mods and eventually the problem disapeared. Before using BOSS the bug was here. After using BOSS the bug didn't showed up anymore, untill now. So it was most likely to be a conflict between two interacting mods (wet and cold and an other one). Maybe Run for your lives. Thanks to Steve40 for he answered to the topic. "Remember to read the troubleshouting section of the mod Wet and Cold." [/EDIT2] ---- Hi, [before the bug appears :] I disabled the mod "Realistic Body System" which wasn't working apparently. And I puted up to date "Wet and cold 1.10" from 1.71. [After Restarting the game] Each time I enter a new location (room, place or whatever), one (and more) NPC spawns close to me. It is INVISIBLE (nothing related to the spell) and impossible to interact with. The NPC keep saying "hmm", "What do you need ?" or "Good morning" when I bump into it and it is effectively blocking me so it does exist. This happens without any exception so it's impossible to play with. [EDIT1:] The troubleshouting section of the mod "wet and cold" mentions a similar issue, I did what the moder advises to but without any effect. The invisible NPC seems to follow me wherever I go, indeed, I sometimes here it again in the middle of nowhere and can find it (I bump into it). When I enter a room, it sometimes go back to skyrim, waiting me outside. I started a new game (loading the save before creation of character), I don't have any issue with this new character. I'm about to deinstall Wet and Cold to see what happens. [/EDIT1] Thanks in advance if you find explanations for that issue. PS/ Sorry if i made some english mistakes (feel free to correct me).