It’s called ‘Open Quickly’, Command+shift+O

Perhaps your current build configiuration is “Simulator”? If so it needs to be built under the device configuration before you can archive it.

If you are having an issue compiling a project after you have added a cocos2d-iphone scene to a box2d project you may have not given the file a .mm extension (you most likely have added just .m to it). This error will most likely pop up with Xcode 4 as there aren’t any file templates out yet.