Index: /CKEditor/trunk/_source/plugins/wysiwygarea/plugin.js
===================================================================
--- /CKEditor/trunk/_source/plugins/wysiwygarea/plugin.js	(revision 4581)
+++ /CKEditor/trunk/_source/plugins/wysiwygarea/plugin.js	(revision 4582)
@@ -184,5 +184,5 @@
 			{
 				var first = fixedBlock.getFirst( isNotEmpty );
-				isNbsp( first ) && first.remove();
+				first && isNbsp( first ) && first.remove();
 			}