some minor problems

direct/src/plugin/p3dObject.cxx

@@ -199,6 +199,17 @@ P3DObject::
   assert(_ref_count == 0);
 }
 
+////////////////////////////////////////////////////////////////////
+//     Function: P3DObject::is_python_object
+//       Access: Public, Virtual
+//  Description: Returns true if this is actually an instance of a
+//               P3DPythonObject, false otherwise.
+////////////////////////////////////////////////////////////////////
+bool P3DObject::
+is_python_object() {
+  return false;
+}
+
 ////////////////////////////////////////////////////////////////////
 //     Function: P3DObject::get_int
 //       Access: Public, Virtual

direct/src/plugin/p3dObject.h

@@ -33,6 +33,8 @@ protected:
 public:
   virtual ~P3DObject();
 
+  virtual bool is_python_object();
+
   virtual P3D_object_type get_type()=0;
   virtual bool get_bool()=0;
   virtual int get_int();

direct/src/plugin/p3dPythonObject.cxx

@@ -43,6 +43,17 @@ P3DPythonObject::
   unref_delete(_session);
 }
 
+////////////////////////////////////////////////////////////////////
+//     Function: P3DPythonObject::is_python_object
+//       Access: Public, Virtual
+//  Description: Returns true if this is actually an instance of a
+//               P3DPythonObject, false otherwise.
+////////////////////////////////////////////////////////////////////
+bool P3DPythonObject::
+is_python_object() {
+  return true;
+}
+
 ////////////////////////////////////////////////////////////////////
 //     Function: P3DPythonObject::get_type
 //       Access: Public, Virtual
@@ -271,6 +282,18 @@ output(ostream &out) {
   }    
 }
 
+////////////////////////////////////////////////////////////////////
+//     Function: P3DPythonObject::get_session
+//       Access: Public
+//  Description: Returns the session that this object is identified
+//               with.
+////////////////////////////////////////////////////////////////////
+P3DSession *P3DPythonObject::
+get_session() {
+  return _session;
+}
+
+
 ////////////////////////////////////////////////////////////////////
 //     Function: P3DPythonObject::get_object_id
 //       Access: Public

direct/src/plugin/p3dPythonObject.h

@@ -33,6 +33,8 @@ public:
   P3DPythonObject(P3DSession *session, int object_id);
   virtual ~P3DPythonObject();
 
+  virtual bool is_python_object();
+
 public:
   virtual P3D_object_type get_type();
   virtual bool get_bool();
@@ -49,6 +51,8 @@ public:
                            P3D_object *params[], int num_params);
 
   virtual void output(ostream &out);
+
+  P3DSession *get_session();
   int get_object_id();
 
 private:

direct/src/plugin/p3dSession.cxx

@@ -458,7 +458,9 @@ p3dobj_to_xml(P3D_object *obj) {
     break;
 
   case P3D_OT_object:
-    if (obj->_class == &P3DObject::_object_class) {
+    if (obj->_class == &P3DObject::_object_class &&
+        ((P3DObject *)obj)->is_python_object() &&
+        ((P3DPythonObject *)obj)->get_session() == this) {
       // If it's one of our kind of objects, it must be a
       // P3DPythonObject.  In this case, just send the object_id down,
       // since the actual implementation of this object exists (as a

direct/src/showutil/runp3d.py

@@ -473,6 +473,7 @@ class BrowserObject:
         return True
 
     def __call__(self, *args):
+        try:
             parentObj, attribName = self.__boundMethod
             if parentObj:
                 # Call it as a method.
@@ -494,10 +495,17 @@ class BrowserObject:
                     result = self.__runner.scriptRequest('eval', parentObj, value = args[0], needsResponse = needsResponse)
                 else:
                     # This is a normal method call.
+                    try:
                         result = self.__runner.scriptRequest('call', parentObj, propertyName = attribName, value = args, needsResponse = needsResponse)
+                    except EnvironmentError:
+                        # Problem on the call.  Maybe no such method?
+                        raise AttributeError
             else:
                 # Call it as a plain function.
                 result = self.__runner.scriptRequest('call', self, value = args)
+        except EnvironmentError:
+            # Some odd problem on the call.
+            raise TypeError
 
         return result