I have never seen that error. Can you tell me exactly where it's happening? Are you getting that during the install routine? Is it a pop-up that comes up?
Also, can you tell me what kind of system you are installing on? And what version of Visual Studio?
I am just thinking out loud. I really am not sure what is going on but, if I understand the problem a bit more, maybe I can help you figure it out.
Jacob J. Sanford
Author of Professional ASP.NET 2.0 Design: CSS, Themes, and Master Pages
Co-author of Professional SharePoint 2007 Design