A build only device cannot be used to run this target

Question

I get this error when I trying to test an app.

A build only device cannot be used to run this target.

No supported iOS devices are available

Answer 1

Well if you want to get the list of available destinations then call xcodebuild and pass in the command line option -showdestinations, and it will print valid options for you to pick from:

xcodebuild -showdestinations -workspace Register.xcworkspace -scheme ThatTestTarget