Index: Core/Gui/src/Core.Gui/Plugin/ViewInfo.cs
===================================================================
diff -u -re19f460e72a67bb4e4d7d32ced99952a3c81e432 -rbed69a29a7d6fcdc6740c085fb79408eb7cc163d
--- Core/Gui/src/Core.Gui/Plugin/ViewInfo.cs	(.../ViewInfo.cs)	(revision e19f460e72a67bb4e4d7d32ced99952a3c81e432)
+++ Core/Gui/src/Core.Gui/Plugin/ViewInfo.cs	(.../ViewInfo.cs)	(revision bed69a29a7d6fcdc6740c085fb79408eb7cc163d)
@@ -289,8 +289,8 @@
                 ViewType = viewInfo.ViewType,
                 Description = viewInfo.Description,
                 Image = viewInfo.Image,
-                GetSymbol = viewInfo.GetSymbol,
-                GetFontFamily = viewInfo.GetFontFamily,
+                GetSymbol = () => viewInfo.GetSymbol != null ? viewInfo.GetSymbol() : string.Empty,
+                GetFontFamily = () => viewInfo.GetFontFamily?.Invoke(),
                 AdditionalDataCheck = o => viewInfo.AdditionalDataCheck == null || viewInfo.AdditionalDataCheck((TData) o),
                 GetViewData = o => viewInfo.GetViewData != null ? viewInfo.GetViewData((TData) o) : o,
                 CloseForData = (v, o) => viewInfo.CloseForData != null && viewInfo.CloseForData((TView) v, o),