Failed to launch IBCocoaTouchImageCatalogTool via CoreSimulator spawn

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.

So After Trying a bit i removed the XCassets file form the Copy Bundle Resources, build once without it and then added it again. Solved it for me.

I had the same issue. My solution was to do the following