Index: Core/Common/src/Core.Common.Controls/Views/HtmlPageView.cs
===================================================================
diff -u -r4512af7782ee31b36941bb280b54d9da2953dd71 -r97a7d474563fc59d9aa79bd43542efdcb48273cd
--- Core/Common/src/Core.Common.Controls/Views/HtmlPageView.cs	(.../HtmlPageView.cs)	(revision 4512af7782ee31b36941bb280b54d9da2953dd71)
+++ Core/Common/src/Core.Common.Controls/Views/HtmlPageView.cs	(.../HtmlPageView.cs)	(revision 97a7d474563fc59d9aa79bd43542efdcb48273cd)
@@ -55,10 +55,7 @@
                 }
                 else
                 {
-                    if (!IsDisposed)
-                    {
-                        webBrowser.Navigate("");
-                    }
+                    webBrowser.Navigate("");
                 }
             }
         }
Index: Core/Common/src/Core.Common.Gui/Forms/PropertyGridView/PropertyGridView.cs
===================================================================
diff -u -r4512af7782ee31b36941bb280b54d9da2953dd71 -r97a7d474563fc59d9aa79bd43542efdcb48273cd
--- Core/Common/src/Core.Common.Gui/Forms/PropertyGridView/PropertyGridView.cs	(.../PropertyGridView.cs)	(revision 4512af7782ee31b36941bb280b54d9da2953dd71)
+++ Core/Common/src/Core.Common.Gui/Forms/PropertyGridView/PropertyGridView.cs	(.../PropertyGridView.cs)	(revision 97a7d474563fc59d9aa79bd43542efdcb48273cd)
@@ -138,10 +138,7 @@
             }
             set
             {
-                if (!IsDisposed)
-                {
-                    SelectedObject = value;
-                }
+                SelectedObject = value;
             }
         }