Failed to launch IBCocoaTouchImageCatalogTool via CoreSimulator spawn

Question

I have an Xcode project which was downloaded from the internet so I don\'t know which Xcode version was used to write it but the language is Swift 2. I opened it in Xcode 7.

Answer 1

Had to add a step Airman00's answer.

1. List item
2. Clean the Project
3. Quit Xcode
4. Delete derived data
5. Reopen Xcode Build

That got it working for some reason...