InvalidCastException: Specified cast is not valid.
VRC.Udon.Editor.UdonGraphGUI.NodeGUI (UnityEditor.Graphs.Node node) (at Assets/Udon/Editor/ProgramSources/UdonGraph/UdonGraphGUI.cs:415)
VRC.Udon.Editor.UdonGraphGUI+<>c__DisplayClass9_0.<OnGraphGUI>b__1 (System.Int32 <p0>) (at Assets/Udon/Editor/ProgramSources/UdonGraph/UdonGraphGUI.cs:62)
UnityEngine.GUILayout+LayoutedWindow.DoWindow (System.Int32 windowID) (at C:/buildslave/unity/build/Modules/IMGUI/GUILayout.cs:442)
UnityEngine.GUI.CallWindowDelegate (UnityEngine.GUI+WindowFunction func, System.Int32 id, System.Int32 instanceID, UnityEngine.GUISkin _skin, System.Int32 forceRect, System.Single width, System.Single height, UnityEngine.GUIStyle style) (at C:/buildslave/unity/build/Modules/IMGUI/GUI.cs:1635)
UnityEditor.EditorWindow:EndWindows()
VRC.Udon.Editor.UdonGraphGUI:OnGraphGUI() (at Assets/Udon/Editor/ProgramSources/UdonGraph/UdonGraphGUI.cs:76)
VRC.Udon.Editor.UdonGraphWindow:DrawGraph() (at Assets/Udon/Editor/ProgramSources/UdonGraph/UdonGraphWindow.cs:169)
VRC.Udon.Editor.UdonGraphWindow:OnGUI() (at Assets/Udon/Editor/ProgramSources/UdonGraph/UdonGraphWindow.cs:139)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)