Configuration Error

I have uploaded my asp.net/ajaxenabled site up to a server and I get this error:

Parser 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.

I have checked my c:\windows\assembly folder and the web extensions are there as matching versions. Does anyone have any idea what I need to do to fix this?

thanks,

wdg

Does the server have AJAX extension installed? Microsoft set up AJAX so the files need to reside in the Global Assembly Cache, rather than just being placed in your application's /bin/ folder, which means you/system admin/web host need to install the extensions with the same installer you used to get access to them on your machine.