Pyside Dynamic Object Management of QML

bijdeb

Building off this Pyside tutorial:
http://qt-project.org/wiki/PySide_QML_Tutorial_Advanced_1
http://qt-project.org/wiki/PySide_QML_Tutorial_Advanced_2
http://qt-project.org/wiki/PySide_QML_Tutorial_Advanced_3
http://qt-project.org/wiki/PySide_QML_Tutorial_Advanced_4

I am attempting to do everything in Python and not have any javascript.

The only difficulty I've run into is when calling the createObject() method of a QDeclarativeComponent which is described nicely as a "Dynamic Object Management" here:
http://qt-project.org/doc/qt-4.8/qdeclarativedynamicobjects.html

So here is a bare bones example that causes the error:

@ import sys
from PySide.QtCore import *
from PySide.QtGui import *
from PySide.QtDeclarative import *

class MainWindow(QDeclarativeView):

 def __init__(self, parent=None):
  super(MainWindow, self).__init__(parent)
  self.setWindowTitle("Main Window")
  # Renders game screen
  self.setSource(QUrl.fromLocalFile&#40;'game2.qml'&#41;)
  # QML resizes to main window
  self.setResizeMode(QDeclarativeView.SizeRootObjectToView)
  # a qml object I'd like to add dynamically
  self.component = QDeclarativeComponent(QDeclarativeEngine(), QUrl.fromLocalFile&#40;"Block.qml"&#41;)
  # check if were ready to construct the object
  if self.component.isReady():
   # create the qml object dynamically
   dynamicObject = self.component.createObject(self.rootObject())

if __name__ == '__main__':
 # Create the Qt Application
 app = QApplication(sys.argv)
 # Create and show the main window
 window = MainWindow()
 window.show()
 # Run the main Qt loop
 sys.exit(app.exec_())@

With main window QML file contents ("game2.qml"):

@ import QtQuick 1.0

Rectangle {
    id: screen
 
    width: 490; height: 720
 
    SystemPalette { id: activePalette }
}@

And QML object I'd like to dynamically construct ("Block2.qml"):

@ import QtQuick 1.0

Rectangle {
    id: block
}@

When I run this code, it crashes at:

@ dynamicObject = self.component.createObject(self.rootObject())@

with:

@ TypeError: Unknown type used to call meta function (that may be a signal): QScriptValue@

I understand the parent must be a QObject but otherwise I'm not entirely sure from the docs what more it should constitute:
http://srinikom.github.io/pyside-docs/PySide/QtDeclarative/QDeclarativeComponent.html

Any idea what might be causing this issue? Potential bug?