I'd suggest TES5Edit cleaning all of the bethesda files... they are very dirty especially if you own all of the DLCs. I show nearly 1000 ITMs and 100 UDRs after a BOSS scan. Granted I just let Steam download all of the updates and re-download the original files. Skyrim.esm Active Update.esm Active Contains dirty edits: 73 ITM, 1 UDR records with 3.0.28. Needs TES5Edit cleaning. (http://www.creationkit.com/TES5Edit_Cleaning_Guide_-_TES5Edit) Dawnguard.esm Active Contains dirty edits: 607 ITM, 82 UDR records with 3.0.28. Needs TES5Edit cleaning. (http://www.creationkit.com/TES5Edit_Cleaning_Guide_-_TES5Edit) Bash Tag suggestion(s): {{BASH: Delev, Relev}} HearthFires.esm Active Contains dirty edits: 171 ITM, 11 UDR records with 3.0.28. Needs TES5Edit cleaning. (http://www.creationkit.com/TES5Edit_Cleaning_Guide_-_TES5Edit) Dragonborn.esm Contains dirty edits: 57 ITM, 8 UDR records with 3.0.28. Needs TES5Edit cleaning. (http://www.creationkit.com/TES5Edit_Cleaning_Guide_-_TES5Edit) Bash Tag suggestion(s): {{BASH: Delev, Relev}}