iOS/tvOS playground fails with “Unable to find execution service for selected run destination”

Question

After migrating to XCode 7.1 I can not use playground with iOS and tvOS platforms. Only OS X works. Simplest playground code produces error message:

Una

Answer 1

Xcode 8 update. Ran into a similar message

"selected platform is not available"

With the playground open, in the upper right of the window, the last icon on the right: Hide or Show the Utilities. Click that, then in that area click the icon on the left: Show File Inspector.

Then in the Playground Settings popup it may be set for unknown. Change it to your Platform of choice (OS X for me) then you should be good to go.