Problem hosting .net user control on Windows Vista / IE7

[M. Cota]

Hello,

I have found a problem running a .Net user control hosted by IE on
Windows Vista / IE7. This problem doesn't occur on Windows XP / IE7.

Here's a sample page that can be used to reproduce the problem:
http://www.softwaresigloxxi.com/Super2d3dGraphLibrary_Tutorials_ClientControl.html

Please, I'm lost at this point. Can anyone tell me why the <object> is
failing to initialize on Windows Vista / IE7? I have tried adding the
website to trusted sites as well as lowering the security settings but
no luck.

I'm not sure if this is a security problem or a limitation on Windows Vista.

Thank you a lot in advance,

M. Cota
Software Siglo XXI team