I am able to open a saved copy of my project in visual studio and it runs fine. After I rebuild the project it gives me the following error :
Could not load file or assembly 'System.Web.Ajax, Version=3.0.31106.0, Culture=neutral, PublicKeyToken=28f01b0e84b6d53e' or one of its dependencies. The system cannot find the file specified.
this is driving me crazy. please help