Robin,
This has been reported a while ago with earlier versions of Adobe 7, maybe it could be fixed in the next release.
I just downloaded the latest update for Adobe 7 (Version 7.0.5.2005092300) and the ActiveX_PDFWindow module in the demo is still crashing when opening any PDF file.
This is on Windows XP, Python 2.4.1 and wxPython 2.6.1.0.
See you
Werner