I have been installing all my projects from a source control application on my new laptop.
Since everything is new, it is difficult to install everything in the right order without missing one.
In one of my projects, when I built the solution I got the following error message.
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.
pointing to the web.config file where the following reference is registered.
<add assembly="System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
This error is actually pointing that I have been using
ASP.NET AJAX 1.0 in this solution and I have not installed the ASP.NET AJAX 1.0 on the new computer.
If you have a similar problem you can download and install it from
Microsoft ASP.NET AJAX 1.0 Download page.