(Solved see bellow)
My AVD Manager doesn\'t launch while SDK Manager works good... It worked once yesterday (so i could create one emulator) but now i can\'t access
SOLVED I could launch again my AVD Manager after deleting my AVD settings in %USER%.android\avd . I think i had something wrong in some AVD...
Check out this post. It focuses on several different issues that one encounter during setting up AVD manager.
Also take a look at this post. It might also be helpfull.