PySide v1.1.1 crash

pyside_crash.py

import sys

from PySide.QtCore import *
from PySide.QtGui import *

class Dummy(QObject):
    def __init__(self, parent=None):
        super(Dummy, self).__init__(parent)

    @Slot()
    def dummy_slot(self):
        print 'In slot'

class MyTreeWidgetItem(QTreeWidgetItem, QObject):
    signal = Signal()

    def __init__(self, parent=None):
        super(MyTreeWidgetItem, self).__init__(parent)

        #Crash on the next line if 'class MyTreeWidgetItem(QObject, QTreeWidgetItem)'
        self.setText(0, 'Test')

    def emit(self):
        self.signal.emit()


if __name__ == '__main__':
    app = QApplication(sys.argv)

    dummy = Dummy()
    tree_widget = MyTreeWidgetItem()

    #Crash on the next line if 'class MyTreeWidget(QTreeWidgetItem, QObject)'
    tree_widget.signal.connect(dummy.dummy_slot)