Index: editors/js/ckeditor-3.0.js
===================================================================
--- editors/js/ckeditor-3.0.js	(revision 60)
+++ editors/js/ckeditor-3.0.js	(working copy)
@@ -147,6 +147,10 @@
     }
   };
 
+  if (CKEDITOR.instances[params.field]) {
+    CKEDITOR.instances[params.field].destroy(true);
+  }
+
   // Attach editor.
   CKEDITOR.replace(params.field, settings);
 };