Moderator in custom usergroup can't merge threads...
 

One of my moderator's who is in a custom usergroup can no longer send new PM's or merge threads since we upgraded from 3.8.2 to 3.8.3. The page only displays the header, footer and the menu, the rest is just a blank white space. I know it's like looking for a needle in a haystack but does anyone know what might be wrong? :confused: