Hi,

I have a suite of custom developed DNN extensions for an application that integrates with Microsoft Dynamics GP.  The DNN framework version is 7.3.1.  The application runs fine on my development machine.

When I install and configure the app on a web server and attempt to access the application, I get the following error:

(Please Note:  I have set the application pool to use the .Net application framework version 4.0.x on the web server)

Could not load file or assembly 'System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.

Can anyone enlighten me as to the reason for this error?

Thanks, Al