Found my head at the bottom of the rabbit hole with the help of my good friend
Jacques Richer. Issue was with multiple inheritance in the Create Menubar method
that was double defining itself as a menubar object.

original was:
def CreateMenus(self):
    self.fileMenu = self.menuBar.addMenu("&File")

Changes
def CreateMenus(self)
    self.fileMenu = self.addMenu("&File")

This comes from ultimately the MainMenubar Class saying that I is are a menu
bar.

Thanks group.