by Jörg Jooss
22. August 2007 10:23
While preparing my home machine for Visual Studio 2008 Beta 2, I found that uninstalling the .NET Framework 3.5 Beta 1 seems to break the ASP.NET 2.0 AJAX Extensions in Visual Studio 2005. After uninstalling, every time I tried to drag a AJAX control from the Toolbox to the design surface, Visual Studio 2005 complained it coudn't find the System.Web.Extensions.dll. To fix that, delete the existing AJAX Extensions tab from the Toolbox and recreate it using Add Tab and Choose Items…
(I also did a repair installation of the ASP.NET 2.0 AJAX Extensions as well, but I don't think that was necessary.)