[python-win32] IActiveScript::AddNamedItem fails with exception

Mark Hammond skippy.hammond at gmail.com
Tue Apr 3 07:11:28 CEST 2012

On 3/04/2012 1:09 AM, David Manns wrote:
> We have a scripting engine interface in our application. This works fine
> for loading/calling VBscript and Javascript scripting engines, but
> PythonScript fails. Specifically, it fails at :
>      m_pAxsScript->AddNamedItem("application", SCRIPTITEM_NAMEDITEM)
> where m_pAxsScript is the IActiveScript interface acquired through
> CoCreateInstance. The hresult returned is:
>      80004005
> which to my mind implies some kind of 'access denied' error. We are
> using Python 2.7.2 and Pywin32 2.7 on a Windows 7 32-bit system. We have
> this problem here on a test machine that was set up to match that in use
> at one of our customers who is now stuck being unable to run any of his
> Python scripts.
> Any clues or suggestions would be gratefully received.
> David

I'd suggest you:

* Execute "python win32comext\axscript\client\pyscript.py -debug" - this 
will re-register the engine for debugging.

* Execute "python -m win32traceutil" - this will start a process which 
is capturing messages from the COM object now it is in debug mode.

* Attempt to create and use the engine - this should cause output to be 

Given the error is E_FAIL and the pyscript engine doesn't specifically 
throw that, I suspect you will see a traceback.  Another alternative is 
to use the IErrorInfo interfaces (I think that is what they are called) 
to try and grab more information at runtime.


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