I tried downloading UL and couldnt get it to run. I followed the A20 steps to install, but it won't load up a navesgane map. Just stops responding. Here's something you can try though:
Get into a new game, one you don't care about, and place a bedroll. Go into DM through the F1 menu. Hit F3 and check the ply button. That will bring up some information on the right side. Get into CM through the F1 menu and search for "sleepingCVarTester". This is what I used to test when making the mod. Right click will give you +100 sleepiness. After right clicking, step on the bedroll and see if you get the "buffIsSleeping" in the top right information panel.
If you're not getting that buff, then there is something blocking the buff from being applied. If you are, but the cvar isn't counting down, then it's something to do with that somehow... Without being able to test it myself, I kinda will need to get you to test some stuff to figure it out.