Installed XCode 6 on Mavericks. It din\'t run. Updated OS to Yosemite 10.10 : Now Xcode.app (installed through *.dmg) launch fails wit
XCode 6
Mavericks
Yosemite 10.10
If you trust the people from whom you are downloading things you can bypass the warning by adjusting your ‘Preferences > Security & Privacy’ to
Allow applications downloaded from: Anywhere