While trying to fix another problem which needed me to install the "animator proxy" and the latest "playmaker utils" I started getting the error below. I'm running Unity 5.4.2 and Playmaker 1.8.3. Here is the full error message:
ArgumentException: Getting control 2's position in a group with only 2 controls when doing Repaint
Aborting
UnityEngine.GUILayoutGroup.GetNext () (at C:/buildslave/unity/build/Runtime/IMGUI/Managed/GUILayoutUtility.cs:665)
UnityEngine.GUILayoutUtility.BeginLayoutArea (UnityEngine.GUIStyle style, System.Type layoutType) (at C:/buildslave/unity/build/Runtime/IMGUI/Managed/GUILayoutUtility.cs:306)
UnityEngine.GUILayout.BeginArea (Rect screenRect, UnityEngine.GUIContent content, UnityEngine.GUIStyle style) (at C:/buildslave/unity/build/Runtime/IMGUI/Managed/GUILayout.cs:340)
UnityEngine.GUILayout.BeginArea (Rect screenRect) (at C:/buildslave/unity/build/Runtime/IMGUI/Managed/GUILayout.cs:322)
Net.FabreJean.PlayMaker.Ecosystem.EcosystemBrowser.OnGUI_ItemList () (at Assets/net.fabrejean/Editor/PlayMaker/Ecosystem/EcosystemBrowser.cs:1955)
Net.FabreJean.PlayMaker.Ecosystem.EcosystemBrowser.OnGUI_Main () (at Assets/net.fabrejean/Editor/PlayMaker/Ecosystem/EcosystemBrowser.cs:811)
Net.FabreJean.PlayMaker.Ecosystem.EcosystemBrowser.OnGUI () (at Assets/net.fabrejean/Editor/PlayMaker/Ecosystem/EcosystemBrowser.cs:1128)
System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MonoMethod.cs:222)
