--- a/src/common/output-stream-object.cc	Mon Feb 08 23:16:24 2010 -0800
+++ b/src/common/output-stream-object.cc	Mon Feb 08 23:32:23 2010 -0800
@@ -23,18 +23,6 @@
 
 namespace ns3 {
 
-NS_OBJECT_ENSURE_REGISTERED (OutputStreamObject);
-
-TypeId 
-OutputStreamObject::GetTypeId (void)
-{
-  static TypeId tid = TypeId ("ns3::OutputStreamObject")
-    .SetParent<Object> ()
-    .AddConstructor<OutputStreamObject> ()
-    ;
-  return tid;
-}
-
 OutputStreamObject::OutputStreamObject ()
   : m_ostream (0)
 {

--- a/src/common/output-stream-object.h	Mon Feb 08 23:16:24 2010 -0800
+++ b/src/common/output-stream-object.h	Mon Feb 08 23:32:23 2010 -0800
@@ -22,6 +22,7 @@
 #include <ostream>
 #include "ns3/object.h"
 #include "ns3/ptr.h"
+#include "ns3/simple-ref-count.h"
 
 namespace ns3 {
 
@@ -58,7 +59,7 @@
  * Ptr<> wouldn't understand the operators and we would have to dereference it
  * to access the underlying object methods.  Since we would have to dereference
  * the Ptr<>, we don't bother and just expect the user to Get a saved pointer
- * to an ostream and dereference it him- or herself.  As in:
+ * to an ostream and dereference it him or herself.  As in:
  *
  * \verbatim
  *   void 
@@ -69,7 +70,7 @@
  *   }
  * \endverbatim
  */
-class OutputStreamObject : public Object
+class OutputStreamObject : public SimpleRefCount<OutputStreamObject>
 {
 public:
   static TypeId GetTypeId (void);

--- a/src/helper/trace-helper.cc	Mon Feb 08 23:16:24 2010 -0800
+++ b/src/helper/trace-helper.cc	Mon Feb 08 23:32:23 2010 -0800
@@ -205,7 +205,7 @@
   NS_ABORT_MSG_UNLESS (ofstream->is_open (), "AsciiTraceHelper::CreateFileStream():  Unable to Open " << 
                        filename << " for mode " << filemode);
   
-  Ptr<OutputStreamObject> streamObject = CreateObject<OutputStreamObject> ();
+  Ptr<OutputStreamObject> streamObject = Create<OutputStreamObject> ();
   streamObject->SetStream (ofstream);
 
   //

--- a/test.py	Mon Feb 08 23:16:24 2010 -0800
+++ b/test.py	Mon Feb 08 23:32:23 2010 -0800
@@ -135,6 +135,7 @@
     ("tutorial/third", "True", "True"),
     ("tutorial/fourth", "True", "True"),
     ("tutorial/fifth", "True", "True"),
+    ("tutorial/sixth", "True", "True"),
 
     ("udp/udp-echo", "True", "True"),