Check either your web.xml or your faces-config.xml. Something's obviously missing.
edit :
i don't know jsf 2, but in my jsf 1 faces-config.xml i have this :
com.sun.facelets.FaceletViewHandler
Maybe you should take a look a this. (could be a hint, sorry i cannot help any further)
edit 2 : this is not the answer, sorry
