Well I've been playing with mods for a while now but today when I went to select which mods I wanted to use, none of them were there. I installed the mods again but still nothing appears under data files. What can I do?

Please don't cross post - use the http://www.gamesas.com/index.php?/topic/1099268-mods-not-appearing-under-data-files/page__p__16067290__fromsearch__1&#entry16067290 thanks.