i added new framework(3rd party) and build.
Unfortunately, since the execution was not.
How do I solve this problem? The whole four nights were spent.:(
my case: use cocoapods, open xcworkspace, and meet "library not found for -lPods-AFNetworking" error.
my solution: Preference -> Location -> Derived Data, click "Advanced" button -> choose 'shared Folder'. (when meet error, the original location is Legacy).