Microsoft's August security bug fix Q323759 really DOES cause an exception to active X objects of the classid:
When they importGeometry through a meterlibrary ( haven't tested pixellibrary yet )
The proof of this is that the entire direct X development site for Microsoft has suddenly founded itself without examples
You'll see "Internal Error" and the pointer causing it in c++ if you have a debugger running.
I've raised the bug with Microsoft and it has a status and tracking id already.
I'll let you all know when they release a patch to cure this patch ( though it'll more likely be a hotfix )
The two reasons they will attend to this quickly ( thankfully ) are that it destroys their remote desktop system ( though it uses a different object classid ) and that
it makes their direct X team look incompetent.