I put up a post on how to get Subtext to run locally on your PC, however I recently had to do a full re-installation of my laptop. and when I went to put a local copy of subtext back on during the install I got the error that you see below.
So I did a search for the problem, some one mentioned that you need to make it so the Public Key is in Caps but no that didn't work.
it turned out that it was because I had not installed the Ajax Extensions on my PC. So once I had installed them it worked no bother.
you can download the ASP.NET AJAX 1.0 from good old Microsoft
