Can't open template to edit
 

I've been removing unused non-vBulletin files on two of my forums.
Actually I've been adding a '~' to the beginning of my unused files until I am double sure I no longer have plugins/mods/hacks that require them.

Now when I go to open a template via Styles, nothing happens on one site.
I click on the template name and nothing. :confused:

Any clue? My xml files are all intact.