Xcode 6.4 “Could not download and install iOS 8.3 simulator”

Question

I\'ve been trying to install iOS simulators 8.3 & 8.4 on Xcode 6.3.2 an 6.4 beta respectively. In the first case is not even an option to download this simulator while in Xc

Answer 1

I found a workaround on the Apple forums. If you run Xcode using sudo the simulator downloads and installs work just fine:

sudo /Applications/Xcode.app/Contents/MacOS/Xcode

Note: Once the downloads and installs are complete you should quit Xcode and start it normally.