[Mediawiki-l] You are not allowed to execute the action you have requested.

[Frames Project]

Hello

When trying to undelete a deleted page I got this message :
Permission error
You are not allowed to execute the action you have requested.


This message is so terse that it does not help to fix the problem.
Could it be modified in such a way as to tell 
- the origin of the "permission error" (Wiki or Database).
- how to fix it.


Thanks
François Colonna