When I started using this product it was an open source projet and this was a very important point to me.
I understand that now you changed for a licensed product but you have to provide the sources of the open source version ! Otherwise you do not look like a reliable partner.
So please share your open sources as the codeplex site is not up to date.
For your convenience I am attaching the source code of the latest Telerik MVC Extensions release (2013.1.219) to this thread. Note that the next release, part of Q2 2013, will be the final release of the product, when it will reach the end of its product support lifecycle.
For new development we recommend migrating to Kendo UI Complete for ASP.NET MVC, as this is the successor of our Telerik MVC Extensions which will be actively developed in the future. More information can be found in this FAQ.
Best regards,
Sebastian
the Telerik team
Check out the successor of Telerik MVC Extensions - Kendo UI for ASP.NET MVC - and deem it for new ASP.NET MVC development.