[IronPython] AttributeError: '__ComObject' object has no attribute 'Visible'

[nekomaho]

Hi,

I get AttributeError in IronPython 2.0A6 & A5, but 2.0A4 is ok. why?

IronPython-2.0A6>ipy.exe -X:PreferComDispatch -X:TabCompletion
IronPython console: IronPython 2.0A6 (2.0.11102.00) on .NET 2.0.50727.832
Copyright (c) Microsoft Corporation. All rights reserved.
>>> import clr
>>> from System import Type, Activator
>>> t = Type.GetTypeFromProgID('Excel.Application')
>>> e = Activator.CreateInstance(t)
>>> e.Visible = True
Traceback (most recent call last):
  File , line 0, in ##29
AttributeError: '__ComObject' object has no attribute 'Visible'

>>> 'Visible' in dir(e)
True