I have to use Xcode occasionally, and have now come across a problem where I've upgraded to Xcode 4.6, but another piece of software I'm using doesn't support it, so I need to go back to Xcode 4.5.
I'm not used to the way Macs work in general, so if the answers provided could be written with that in mind, that'd be helpful. :)
Question&Answers:os