This is doing my head in!! I've found related posts here but not my exact problem.
In the file inspector I changed the name (under Identity and Type) from "LiveVideo" to "Barnvisor". After that I'm not able to run the app i the iOS simulator.
It says "Build Failed" and I get the "Apple MAch-O Linker Error. linker command failed with exit code 1 (use -v to see invocation)". And it says: ld: file not found: /Users/johangrip/Library/Developer/Xcode/DerivedData/Barnvisor-fzxomzatehfetsfqluxenxerhxov/Build/Products/Debug-iphonesimulator/LiveVideo.app/LiveVideo
What to do? :(