A0.04 (Mac) Docking ShaderForge and then switching layouts = broken

Dock the Shaderforge window, save the layout, switch layout away from shader forge and then back again. Annoyingly cannot right click the tab to close the SF window at this point. :(

Info Tab:

NODE IS NULL

UnityEngine.Debug:Log(Object)

ShaderForge.SF_Editor:OnGUI()

UnityEditor.DockArea:OnGUI()

Error Tab:

DivideByZeroException: Division by zero

UnityEditor.PreviewRenderUtility.InitPreview (Rect r)

UnityEditor.PreviewRenderUtility.BeginPreview (Rect r, UnityEngine.GUIStyle previewBackground)

System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at /Users/builduser/buildslave/monoAndRuntimeClassLibs/build/mcs/class/corlib/System.Reflection/MonoMethod.cs:222)

Rethrow as TargetInvocationException: Exception has been thrown by the target of an invocation.

System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at /Users/builduser/buildslave/monoAndRuntimeClassLibs/build/mcs/class/corlib/System.Reflection/MonoMethod.cs:232)

System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters) (at /Users/builduser/buildslave/monoAndRuntimeClassLibs/build/mcs/class/corlib/System.Reflection/MethodBase.cs:115)

ShaderForge.SF_PreviewWindow.DrawMesh (Rect previewRect)

ShaderForge.SF_PreviewWindow.OnGUI (Int32 maxWidth)

ShaderForge.SF_Editor.DrawPreviewPanel (Rect r)

ShaderForge.SF_Editor.OnGUI ()

System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at /Users/builduser/buildslave/monoAndRuntimeClassLibs/build/mcs/class/corlib/System.Reflection/MonoMethod.cs:222)