I just got a new computer at work. My old machine was Windows XP, my new machine is Windows 7. I installed Visual Studio 2005 on the new machine and had to apply the appropriate service packs so it would run on Windows 7.
I opened an existing Web solution and tried to bulid it but received many errors. Most of them I have fixed by delete old references and readding them. But I am still receive an error that I cannot fix. Here is the error:
Unable to create type 'ajaxToolkit:ValidatorCalloutExtender'. Could not load file or assembly 'System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified. C:\inetpub\Layred Examples\Web Site\EmailFriend.aspx
So, I'm not sure if the problem lies in the ajaxToolkit or the System.Web.Extensions.
I've deleted the <assembly> entry for System.Web.Extensions in my web.config file and did an "Add Reference" to readd the System.Web.Extensions. But that didnt' do it.
I also opened the EmailFriend.aspx.cs file where i have "using AjaxControlToolkit" and I am able to access the ValidatorCalloutExtender with no problems.
What do I need to do to get this working again?