You should try this !!! (That's from ETAC) [ http://www.nexusmods.com/skyrim/mods/13608/? ]
If you are experiencing any "odd mesh behavior" specifically things either appearing, or not appearing, or showing up in a giant pile blocking doors or roads or entire buildings... This can be resolved by installing any mesh-editing mods AFTER you've installed ETaC, let me see if I can dig up the original post. SO. Try the following:
#1: Start by getting somewhere completely unedited (like Whiterun), save and exit;
#2: Uninstall ETaC COMPLETELY. Double check your data folder to make sure that everything is gone.
All patches, main files, meshes/textures/sounds/etc., the .bsa, the .esm. So on and so forth.
#3: Load your save (DO NOT RE-SAVE OVER THIS SAVE -- WE ARE JUST CHECKING).
Go to [whatever town this is happening in], and confirm everything is gone, back to normal,
right with the world. EXIT WITHOUT SAVING.
#4: Then uninstall any of the following: SMIM, WATER, Better Dynamic Snow, and/or ELFX.
#5: Re-install ETaC (please be sure you are using the most recent version.)
#6: Then re-install the following: SMIM, WATER, Better Dynamic Snow, and/or ELFX.
#7: Then then then... Re-install any of the ETaC Patches you were using.
#8: Load your save, go to [whatever town this is happening in]. Report back to me. lol.
If it's STILL not working after - Let me know. And by "let me know" I mean PM me your load order along with a couple screenshots and any other relevant information. Happy to help if I can.