WTM!!!!! [ What The MAC! ]

You can't use this version of the application Xcode.app with this version of
Mac Os X.
You Have Mac Os X 10.6.3. The application requires Mac Os X 10.6.2 or LATER!!!! WTM!

10.6.3 > 10.6.2 no?
[ En cualquier universo excepto para el universo Mac ]

Sin palabras ...