executing cocos2dx projects with iOS6 SDK

Hi,

I accidentally updated my XCODE and iOS SDK to 6, and now I get BAD ACCESS errors when running my game under development :-S

I get a BAD ACCESS error in the iPhoneOS6.0/usr/include/c++/4.2.1/bits/stl_tree.h _M_begin()

any idea? is it possible to roll back the SDK? Thanks!