Index: /FCKeditor/trunk/editor/_source/internals/fck_ie.js
===================================================================
--- /FCKeditor/trunk/editor/_source/internals/fck_ie.js	(revision 1121)
+++ /FCKeditor/trunk/editor/_source/internals/fck_ie.js	(revision 1122)
@@ -93,5 +93,7 @@
 function Doc_OnSelectionChange()
 {
-	FCK.Events.FireEvent( "OnSelectionChange" ) ;
+	// Don't fire the event if no document is loaded.
+	if ( FCK.EditorDocument )
+		FCK.Events.FireEvent( "OnSelectionChange" ) ;
 }