The menu is to big, the background goes over the normal screen so i can’t select which formation i wanne pick since the menu is over it.

Is this because the new feature is live?

I got the same pb (Windows 7 + RubyS started on Firefox)

Clean your Browser cookies, or use CCleaner :D

http://www.filehippo.com/download_ccleaner

Cleaning browers cookies hasnt fixed the problem for me

@Northstar, after cleaning the cookies, do not forget to stop and restart your Browser ;)
It worked for me.