Thread:Support/"Fatal exception of type MWException" as answer for "Special:ManageMessageGroups" page/reply (4)

Thank you !

It works for the first part : )

Only problem remaining : Special:LanguageStats and Special:MessageGroupStats never publishes, or very shortly, when coming back to precedent page, after clicking quickly twyce on the "precedent page" Firefox button, or sometimes I don't know why ?!