[Can't mod Skyrim]

But after clicking the reset option, wouldn't it let activate it if you want to?

[Can't mod Skyrim]

I recently tried modding Skyrim, I was going to try texture mods first but when I installed them, nothing happened. I exited the game, went to the mod manager and noticed the archive invalidation wasn't activated. When I hovered the cursor over it, it said "Reset Archive Invalidation", I clicked it and nothing happened. There was no check on the side of it like usual showing that it's activated. I did recently re-downloaded and installed it. Before, when I was modding Fallout NV, it was just fine, but now it's doing this. I tried uninstalling the mods and tried to activated then, but nothing happened. Any help will be appreciated.

[Cannot download anything from new vegas nexus]

It's doing the same for me, only when I download them, the little section on the NMM where you can watch it download; it would stop and say the file doesn't exist.