Literally just started playing around with nexus mods and I ran into an issue.
While using Google Chrome, I was not able to use the download using NMM option. When clicked, chrome would prompt me that the website wanted permission to launch NMM on my system. When I allowed this, NMM would launch but the download would error out and not start. I tried launching as admin before trying to use the download with nmm button, no dice. I then noticed that the path that chrome wanted to use to launch NMM was still that original install directory C:Program Files, which is no longer valid because I had to move the install folder to C:Games(windows8).
Anywho, it seems to work just fine using firefox. Wanted to post this in case anyone else had the issue. I am not sure how to get chrome to see the new path without uninstalling and reinstalling NMM in the C:Games directory contrary to the suggested default settings.