Scroll down to Missing or Repacked Mod Files, then download "Skyrim Project Optimization - Full Version". Add the file to NMM and install as usual *Out of courtesy to the creator of the mod, here is a link to the original file. (No download needed): (LINK) Unofficial Skyrim Patch (LI...
Click the "Files" tab and you will get to the download section. NMM will automatically catch the file(s) and start downloading right away after clicking "Mod Manager Download". NMM will then save the file, and the mod will show in the "mods" tab in the main window. Right click the ...