Вызов .Net сборки из тега OBJECT в IE8

У меня есть веб-страница, которая вызывает сборку .Net. Все отлично работает в Windows XP и IE7. Соответствующие части:

<html>
<head>
    <script language="javascript" type="text/javascript">
    function doScript() {
        myControl1.Go("value1","value2");
    }
    </script>
</head>
<body onload="javascript:doScript();">
    <object id="myControl1" name="myControl1" 
            codebase="../cabs/myassembly.dll" 
            classid="../cabs/myassembly.dll#MyNs.MyClass" 
            width="1" height="1"></object>
</body>
</html>

Я не могу заставить это работать в Windows 7 с IE8. Некоторые заметки:

The assembly is strong named. I am hosting this on localhost right now. On the machine that is working (VirtualBox-hosted WinXP, IE7), it is using an IP address to my local machine (http://1.2.3.4/...) and that IP is in the "Trusted Sites" of IE. On the machine that is not working (Windows 7, IE8), it is using http://localhost/... and localhost is in the "Trusted Sites" of IE. The assembly is being served from http://localhost/cabs/myassembly.dll. The error message is a javascript error, "Object doesn't support this property or method" Fiddler shows a 200 OK response when the file is requested, however, it does not appear that the dll is making it to the temporary internet files location. The site is running in "IE 7 compatibility" mode. I have dropped all IE permissions to the most insecure it will let you in all zones, and the behavior is exactly the same.

Does anyone have any ideas to try to get this to work or troubleshoot where the problem is at?

Disclaimer: Yes, I realize it is 2012, and the world has moved past IE7, IE8, ActiveX, etc. Let's just say we're a little bit behind technologically. This is the problem I have to solve; upgrading to modern solutions isn't going to be an option.

UPDATE: Я заставил его работать в Windows XP VirtualBox под управлением IE8. Таким образом, кажется, что проблема специфична для Windows 7. Она не работает как на моей локальной машине, так и на VirtualBox под управлением Windows 7, IE8.

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