Configuration Error Could not load file or assembly 'System.Web.Extensions, .....

[sunny]

Hi

Its Shrawan from a:m web, We have been using the rad controls from past 2 and half yrs, 

And for some reasons we are now shifting all our projects i to new server where the sitefinity projects are all working fine, But when comes to one project (http://www.gco2.ie/) in the existing server (You can click and navigate through this , ) coming to newer server (http://217.114.162.121/gco2/index.aspx) its giving configuration error saying

"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" 

Line 36: <add assembly="System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/> Line 37: <add assembly="System.Drawing.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/> Line 38: <add assembly="System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>Line 39: </assemblies> Line 40: </compilation>

Source File: E:\Inetpub\wwwroot\gco2\web.config    Line: 38

Assembly Load Trace: The following information can be helpful to determine why the assembly 'System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' could not be loaded.

WRN: Assembly binding logging is turned OFF. To enable assembly bind failure logging, set the registry value [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1. Note: There is some performance penalty associated with assembly bind failure logging. To turn this feature off, remove the registry value [HKLM\Software\Microsoft\Fusion!EnableLog].

Can anybody help me in this regard, because we need to get redirect to newer location soon

Thanks in advance
regards
Sravan Kumar T

[Sebastian]

Hello sunny,

This is a generic ASP.NET AJAX 1.0 error which indicates that the System.Web.Extensions assembly cannot be referenced due to some unknown reason. Review the following ASP.NET forum thread which elaborates on the same subject and explains how to address the exception:

http://forums.asp.net/p/1055304/1499963.aspx

Regards,
Sebastian
the Telerik team

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