I've tried using "Mouse Pick 2d Event" and every time I play, I get this error:
NullReferenceException: Object reference not set to an instance of an object
HutongGames.PlayMaker.Actions.MousePick2dEvent.DoRaycast () (at Assets/PlayMaker/Actions/Physics2D/MousePick2dEvent.cs:103)
HutongGames.PlayMaker.Actions.MousePick2dEvent.DoMousePickEvent () (at Assets/PlayMaker/Actions/Physics2D/MousePick2dEvent.cs:68)
HutongGames.PlayMaker.Actions.MousePick2dEvent.OnEnter () (at Assets/PlayMaker/Actions/Physics2D/MousePick2dEvent.cs:51)
HutongGames.PlayMaker.FsmState.ActivateActions (Int32 startIndex) (at C:/Projects/Playmaker_1.9.0/Projects/Playmaker.source.unity/Assets/PlayMaker/Classes/FsmState.cs:205)
HutongGames.PlayMaker.FsmState.OnEnter () (at C:/Projects/Playmaker_1.9.0/Projects/Playmaker.source.unity/Assets/PlayMaker/Classes/FsmState.cs:175)
HutongGames.PlayMaker.Fsm.EnterState (HutongGames.PlayMaker.FsmState state) (at C:/Projects/Playmaker_1.9.0/Projects/Playmaker.source.unity/Assets/PlayMaker/Classes/Fsm.cs:2767)
HutongGames.PlayMaker.Fsm.SwitchState (HutongGames.PlayMaker.FsmState toState) (at C:/Projects/Playmaker_1.9.0/Projects/Playmaker.source.unity/Assets/PlayMaker/Classes/Fsm.cs:2714)
HutongGames.PlayMaker.Fsm.UpdateStateChanges () (at C:/Projects/Playmaker_1.9.0/Projects/Playmaker.source.unity/Assets/PlayMaker/Classes/Fsm.cs:2642)
HutongGames.PlayMaker.Fsm.Start () (at C:/Projects/Playmaker_1.9.0/Projects/Playmaker.source.unity/Assets/PlayMaker/Classes/Fsm.cs:1925)
PlayMakerFSM.Start () (at C:/Projects/Playmaker_1.9.0/Projects/Playmaker.source.unity/Assets/PlayMaker/PlayMakerFSM.cs:548)