Error output from Unity Console #27

ArgumentException: Value does not fall within the expected range.
UnityEditor.Graphs.Property.ConvertFromSingleValue (System.Object o) (at /Users/builduser/buildslave/unity/build/Editor/Graphs/UnityEditor.Graphs/Property.cs:342)
UnityEditor.Graphs.Property.set_value (System.Object value) (at /Users/builduser/buildslave/unity/build/Editor/Graphs/UnityEditor.Graphs/Property.cs:221)
UnityEditor.Graphs.Property..ctor (System.String typeString, System.String name) (at /Users/builduser/buildslave/unity/build/Editor/Graphs/UnityEditor.Graphs/Property.cs:175)
UnityEditor.Graphs.Node.ConstructAndAddProperty (System.String serializedTypeString, System.String name) (at /Users/builduser/buildslave/unity/build/Editor/Graphs/UnityEditor.Graphs/Node.cs:389)
UnityEditor.Graphs.Node.AddOrModifyPropertyForSlot (UnityEditor.Graphs.Slot s) (at /Users/builduser/buildslave/unity/build/Editor/Graphs/UnityEditor.Graphs/Node.cs:418)
UnityEditor.Graphs.Node.AddSlot (UnityEditor.Graphs.Slot s, System.Int32 index) (at /Users/builduser/buildslave/unity/build/Editor/Graphs/UnityEditor.Graphs/Node.cs:199)
UnityEditor.Graphs.Node.AddSlot (UnityEditor.Graphs.Slot s) (at /Users/builduser/buildslave/unity/build/Editor/Graphs/UnityEditor.Graphs/Node.cs:188)
UnityEditor.Graphs.Node.AddInputSlot (System.String name, System.Type type) (at /Users/builduser/buildslave/unity/build/Editor/Graphs/UnityEditor.Graphs/Node.cs:170)
Klak.Wiring.Patcher.Node.PopulateSlots () (at Assets/Klak/Wiring/Editor/Patcher/Node.cs:135)
Klak.Wiring.Patcher.Node.Initialize (Klak.Wiring.NodeBase runtimeInstance) (at Assets/Klak/Wiring/Editor/Patcher/Node.cs:117)
Klak.Wiring.Patcher.Node.Create (Klak.Wiring.NodeBase runtimeInstance) (at Assets/Klak/Wiring/Editor/Patcher/Node.cs:42)
Klak.Wiring.Patcher.Graph.ForceSyncNow () (at Assets/Klak/Wiring/Editor/Patcher/Graph.cs:124)
Klak.Wiring.Patcher.Graph.SyncWithPatch () (at Assets/Klak/Wiring/Editor/Patcher/Graph.cs:81)
Klak.Wiring.Patcher.PatcherWindow.OnGUI () (at Assets/Klak/Wiring/Editor/Patcher/PatcherWindow.cs:100)
System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at <1f0c1ef1ad524c38bbc5536809c46b48>:0)
Rethrow as TargetInvocationException: Exception has been thrown by the target of an invocation.
System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at <1f0c1ef1ad524c38bbc5536809c46b48>:0)
System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters) (at <1f0c1ef1ad524c38bbc5536809c46b48>:0)
UnityEditor.HostView.Invoke (System.String methodName, System.Object obj) (at /Users/builduser/buildslave/unity/build/Editor/Mono/HostView.cs:345)
UnityEditor.HostView.Invoke (System.String methodName) (at /Users/builduser/buildslave/unity/build/Editor/Mono/HostView.cs:339)
UnityEditor.HostView.InvokeOnGUI (UnityEngine.Rect onGUIPosition, UnityEngine.Rect viewRect) (at /Users/builduser/buildslave/unity/build/Editor/Mono/HostView.cs:315)
UnityEditor.DockArea.DrawView (UnityEngine.Rect viewRect, UnityEngine.Rect dockAreaRect, System.Boolean floatingWindow, System.Boolean isBottomTab) (at /Users/builduser/buildslave/unity/build/Editor/Mono/GUI/DockArea.cs:373)
UnityEditor.DockArea.OldOnGUI () (at /Users/builduser/buildslave/unity/build/Editor/Mono/GUI/DockArea.cs:340)
UnityEngine.UIElements.IMGUIContainer.DoOnGUI (UnityEngine.Event evt, UnityEngine.Matrix4x4 parentTransform, UnityEngine.Rect clippingRect, System.Boolean isComputingLayout, UnityEngine.Rect layoutSize) (at /Users/builduser/buildslave/unity/build/Modules/UIElements/IMGUIContainer.cs:278)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)