I get this error after adding a Swift class to an old Xcode project.
dyld: Library not loaded: @rpath/libswift_stdlib_core.dylib
How can I make the project run again?
For me none of the previous solutions worked. We discovered that there is a flag ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES (in earlier versions: "Embedded Content Contains Swift Code") in the Build Settings that needs to be set to YES. It was NO by default!