Rajesh,

>I am getting the below error while building a VS2005 web application. I have installed all MM.NET 2007 and Infragistics 2007 vol3 controls.
>
>"Could not load file or assembly 'Mere Mortals Framework 2005 Infragistics Web Controls, Version=2.4.0.0, Culture=neutral, PublicKeyToken=f9b5aaf729361a44' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)"
>
>Can somebody please help me?

Can you supply the MM.Net version number? Are you using Version 2.4?
Also can you confirm you downloaded and installed the Mere Mortals Infragistics wrapper classes.

Those things aside, It appears that maybe there is a version mismatch between the MM wrappers and the infragistics controls. You may want to review the Dev Guide section under Third Party Components section "Recompiling Third Party Product Assemblies".

Tim