It happend when i tryed to log out.
When that happend i deactivated the plugin, and even when that happend it still came up.
So i deleted the plugin and the AME plugin (wich was not active) from my ftp.
And the problem was still there.
but because the problem it didnt only affect this site, it did on all my wordpress sites on my host.
So i contacted my host, and we found a way to get past the authentication screen. and now i can log in/out of all my wordpress sites again.
