Xcode 6.3 Crashes when navigating from storyboard to other Swift 1.2 file

Question

I installed Xcode 6.3 which includes support for Swift 1.2. It turned up a ton of error messages, which are mostly casting issues.

I navigated to the storyboard, an

Answer 1

I can confirm this bug. I was stuck in storyboard and could do nothing to get out of it (couldn't even open the assistant). As a workaround, with the storyboard open, right-click the .storyboard file and select Open As - Source Code. This will switch your storyboard to code and you will be able to then switch to any file.