I think I broke it. When I link to Nexus via Mod Organizer the website perma-loads the descriptions, file information, pictures, etc. On the bright side, it's not giving me the error where I had an E, where everything should be! Woot. Oh, Disabling Avast really quick to see if it's secretly causing mayhem. Meh. I don't know. Should I report as bug, or should I be doing some serious troubleshooting?
Edit. It's magically working now. I really don't know.