Why can't I install any mods from Skyrim Nexus?

I can install mods perfectly from Steam, but when I try to install mods on the Skyrim Nexus, my computer does NOTHING. I have SKSE installed and NMM installed, but no mods are installing. I continually click the button to install them, nothing happens. I close out and go back on, nothing happens. Is there any way to get the Skyrim Nexus mods installed? Some of them look incredible and I would really love to be able to use them.

Notes: I think I have the latest version. I got the Skyrim game with the Elder Scrolls Anthology and ordered it on Amazon as soon as it came out on Sept. 10th, so it should be updated... I have accounts on Steam and Nexus. Also, I currently have all 3 DLC's (they came with it in the Elder Scrolls Anthology) and I have 129 Steam mods installed (not all of them set to load when I play the game. I only have about 30 that are.) and none of them are texture packs or ENBs or anything of the sort; just player home mods, follower mods, city mods, a few quest mods, etc.

The mods I tried installing that wouldn't do anything were Deus Mons, SkyUI, and Unlimited Bookshelves. I haven't tried anything else because none of these worked and I figured that if those didn't, nothing else on the Skyrim Nexus would. :/

?2016-11-11T12:37:00Z

Skse Skyrim Nexus

?2013-09-19T02:56:23Z

I would try uninstalling NexusModManager and re-installing it, along with all of your mods. Could be an issue with NMM not having the right location for Skyrim. Make sure you are not only installing the mods, but also "activating" them using NMM. Other than that I am not sure.