More insult to injury. I had to attack the C:\WINDOWS\assembly and remove the former versions THERE.

>>That version no longer is on my system. The only version I can find in my registry is 9.1.5000.0
>
>Kevin McNeish just answered this in a thread about Mere Mortals for .NET. Because ASP.NET stores the version in the page header, you evidently have to manually make changes to your pages to put the correct version and GUID.