here I would like to create a portal but when I do the / mvp he told me create an internal problem occurred during this command
I try all the other control c works well when I made this one on what do inprote world

google Trad désoler pour le mauvais englais

Without any logs to look at I can only guess at what the problem is. I imagine you're using WorldEdit. If so you need to use the dev versions of Multiverse plugins. You can find Core here: http://ci.onarandombox.com/job/Multiverse-Core/ and Portals here: http://ci.onarandombox.com/job/Multiverse-Portals/