error load playmaker 1.8.6 & unity 5.6.5f1

[shirazjoon]

hi
help me....
error load playmaker editor 


TypeLoadException: Could not load type 'UnityEngine.ImageConversion' from assembly 'PlayMakerEditor'.
HutongGames.PlayMakerEditor.FsmEditorStyles.InitCommon () (at C:/Users/Alex/Documents/Unity/Playmaker/Projects/Playmaker.source.unity/Assets/PlayMaker/Editor/Classes/FsmEditorStyles.cs:302)
HutongGames.PlayMakerEditor.FsmEditorStyles.Init () (at C:/Users/Alex/Documents/Unity/Playmaker/Projects/Playmaker.source.unity/Assets/PlayMaker/Editor/Classes/FsmEditorStyles.cs:275)
FsmComponentInspector.OnInspectorGUI () (at Assets/PlayMaker/Editor/FsmComponentInspector.cs:63)
UnityEditor.InspectorWindow.DrawEditor (UnityEditor.Editor editor, Int32 editorIndex, Boolean rebuildOptimizedGUIBlock, System.Boolean& showImportedObjectBarNext, UnityEngine.Rect& importedObjectBarRect) (at C:/buildslave/unity/build/Editor/Mono/Inspector/InspectorWindow.cs:1240)
UnityEditor.DockArea:OnGUI()

[Alex Chouls]

From the error it looks like it's because of this Asset Store bug:
http://hutonggames.com/playmakerforum/index.php?topic=15842.msg73771

Try re-downloading Playmaker and re-import to get the correct package for the Unity version you're running.

If that doesn't fix the issue let us know!