Have Unity 5.4.3f1, try to install playmaker 1.8.3, errors:
1) Assets/PlayMaker/Actions/LoadLevel.cs(71,67): error CS0117: `SceneManager' does not contain a definition for `LoadSceneAsync'
2) Assets/PlayMaker/Actions/LoadLevel.cs(82,30): error CS0117: `SceneManager' does not contain a definition for `LoadScene'