Unable to create device set in library / developer / XCPGDevices

Question

I am using Xcode 8 and cannot start the playground. As soon as the playground opens and starts building the file, I get this error:

In the "Settings" → "Components in Xcode". I do not see any iOS 10 simulator available for installation:

I have Xcode 6.4, 7.3, and 8.0 installed, but my command line tools point to Xcode 8. How can I fix this problem?

Answer 1

Rebooting my computer and opening Xcode 8 to 7 or 6 fixed this error and launched Xcode 8 playgrounds.