Xcode 5 storyboard compile failure
I found the answer to this. During a merge in git, the project file had not been merged properly and Profiles.storyboard was being included as a resource twice. When it tried to compile the same resource the second time, it would fail.
I just Cleaned the project, then built it again, afterwards the error disappeared.
Just feel I should add that I had this problem for a while and had no clue how to solve it.
Turns out one of my Storyboard IDs had a slash in (/) which was causing the error. Removing this slash resolved the error!
Hope this helps some people!