Hello im on unity 2017.1.0f3 and i got 2 errors:
Error CS0103 The name 'PlayModeStateChange' does not exist in the current context PlatformBase.cs:297
Error CS0117 'EditorApplication' does not contain a definition for 'playModeStateChanged' PlatformBase.cs:232
What version of the SDK are you using here ?
i have 22.214.171.124, anyway updating unity to newest version(2017.2.0f3) solved my problem.
Thanks for confirming. If you need anything else just let me know.