HEEEELP I broke my store

I just installed the google site map module and everything worked fine but it was getting some of products wrong from the spanish language, and I did not care about spanish so I went to the admin and delete the spanish language under localizations, now my store is EMPTY with spanish menu and no product just the following error:

Fatal error: Call to a member function MoveNext() on a non-object in /home/domain/public_html/includes/classes/category_tree.php on line 68

HEEEEELLLLLLP!!!! I didnt back it up. :cry:

The site went from english to spanish even though spanish doesn't exist anymore, its not showing products and is giving me the error message that I described above :wacko:.