Fatal error: Call to a member function getBodyAttributes() on a non-object in zircon.theme on line 19

i installed zircon (the core+skin witch was in 1 package) but after i selected that i wanted to use zircon skin as default my main site gives this error Fatal error: Call to a member function getBodyAttributes() on a non-object in www\themes\zircon\zircon.theme on line 19

i am running this install local on a windows 7 with wampserver