language settings. English and french are in this encoding. It's not a problem for english in fact, but languages with accent (like french > ? ? ? ?, etc.) it's a problem. Then, now, everything is fine.
He " did"

Sorry for my english
In attachement, two screen capture (forum in french language). The only problem I have is the integration of the Translate plugin for vb, which forward to the forum and not wiki (I just saw it)
I still have to finish to edit my templates, to fix some default wiki colors that doesn't suit my forum template.