.package files aren't showing up?

Ugh, so frustrating... the same thing is happening to me, but when I try to repair game the option isn't available. So I just cut/pasted my Mods folder contents to a folder on my desktop, restarted the game and quit it, then copied/pasted the contents of the desktop Mods folder back into its place and nada. Actually my mods stopped working a long time ago, so long I can't even remember when but I didn't care too much then - I do now though, I've got all these lovely new hair styles and things that I want to try!
I don't know what to do!