Xcode 6 GM crashes when selecting the main storyboard or a xib

Question

I just downloaded the Xcode 6 GM and every time I select the main storyboard (and a specific xib) Xcode crashes.

The error to be sent to Apple contains the following

Answer 1

I've heard that it could be an autolayout problem, so I tried to disable it manually and it worked!

If you right click on the storyboard file, open as source code, and REMOVE the useAutolayout="YES", then clean, rebuild, you should be able to open with no problems.