MyBB Community Forums

on a friends forum i created it comes up when i change hes usergroup to admin and says

The following errors were encountered:

* The language you selected does not exist. Please select an existing language

any help would be great

This is a very common problem, if you searched you would have found an answer.

Just select a language that isn't 'Default' in the user's settings. Under Account Info I believe, right at the bottom.