Hello Rumen,

have you built Aikido on Version 1.0 of System.Web.Extensions?? Doesn't it work with 3.5?

Hello Craig,

Thanks for sharing your solution in forums - luckily the error message produced by VS.NET was friendly enough. We need System.Web.Extensions in order to use the new AJAX functionality built-in ASP.NET (the client-side API and the new server-side asp:ScriptManager). All controls from the newer generation (code-named Aikido) that reside in Infragistics.Web.dll need an asp:ScriptManager instance on the page and ScriptManager is located in the System.Web.Extensions.dll assembly.

I figured out the issue.  I didn't have version 1.0.601025.0 of System.Web.Extensions.dll or System.Web.Extensions.Design.dll which are required for the Layout components in design mode.

The way I could see which .dlls were in the GAC was by browsing to c:\windows\assembly

To install these two .dlls, I copied them from a computer that had the correct version.

 The directories the the .dlls reside in are

c:\windows\assembly\GAC_MSIL\System.Web.Extensions\1.0.61025.0__31bf3856ad364e35

c:\windows\assembly\GAC_MSIL\System.Web.Extensions.Design\1.0.61025.0__31bf3856ad364e35

I copied them using the command prompt since you can't browse to the folder in Windows.

After copying the files, I was able to add the WebSplitter to the Visual Studio toolbox using Choose Items and Browse.

 -Craig

When I right click on the ToolBox, select Choose Items and [Browse]

and select the file

c:\Program Files\Infragistics\NetAdvantage for .NET 2008 Vol. 1 CLR 2.0\ASP.NET\Bin\Infragistics2.Web.v8.1.dll

I get the following error.

'Could not load file or assembly 'System.Web.Extensions, Version=1.0.601025.0, Culture=neutral, PublicToken=31bf3856ad364e35' or one of it's dependencies.  The system cannot find the file specified.'

Any idea on what's wrong ? 

-Craig