I'm not %100 positive but old code searching for a variable can be removed by SKSE. I believe I've read SKSE will clean up old scripts recalling a certain objects but VERY slowly. You can try by adding this In folder: Data\SKSE create a .txt file and rename it to SKSE.ini Open this file and add this; [General] ClearInvalidRegistrations=1 Save & Close the file Also if you have a plugin folder, copy and paste one in there too just to make sure.