Mod Organizer Help

Hi,

I've been recommended Mod Organizer by a few people for Skyrim.
I have a mod list of generally 100-150 mods.
I've found a few issues that are putting me off this program. The main one that needs attention is "There are files in your overwrite mod | No guided fix" in the problems tab at the top.

The folder that appears every time is SKSE/plugins/hdtHighHeelEnch.dat
How do I get rid of this appearing every time? It seems to come back after I delete or drag it into the HDT High Heels folder.

Thanks a million.