Running my Swift2-App onto iPhone SE failed with this error message:
*** error: Couldn't codesign /Users/appdev/Library/Developer/Xcode/DerivedData/AppName/Build/Products/Debug-iphoneos/Intelligent Workout.app/Frameworks/libswiftCore.dylib: codesign failed with exit code 1
Xcode: Version 7.3.1 (7D1014)
OSX: El Capitan Version 10.11.6 (15G31)