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

I was able to resolve this issue with these two commands in the Terminal:

$ rm -rf ~/Library/Developer/CoreSimulator/Devices
$ killall -9 com.apple.CoreSimulator.CoreSimulatorService