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

The same happened to me and it was solved by cleaning the project. However, if you cleaned it —as you say you did—, I would try closing and reopening Xcode. Even though it seems stupid, it works more often than not.