I have problem with Xcode, keeps giving me a linker error, and it doesn't build the project. The following is the error am getting
ld: file not found: /Users/someuser/Library/Developer/Xcode/DerivedData/MAR-akbwbarcniqxytctbebckkelkbxs/Build/Products/Debug-iphonesimulator/MAR.app/MAR
clang: error: linker command failed with exit code 1 (use -v to see invocation)
As some of the fellow developers have mentioned here, the root cause of the error was "Change in Product Name". I fixed it by :