Description:
This document describes a known problem with Internet Explorer 8 and how to resolve it.
Solution:
Please review this Microsoft Knowledge Base article:
http://support.microsoft.com/kb/281679
This problem will happen when the standard JavaScript window.open() is used and all of the dll's for Internet Explorer are not registered properly. Enabling the JavaScript debugger in the web browser will allow you to see what function in the JavaScript is causing the problem.