Hello Emad Ud Din,
According to the image attached to the support ticket, it seems that there is a reference to the Telerik.Web.Design assembly in your web.config file. This reference is not needed. The Telerik.Web.Design
assembly contains the design-time code, which is not executed in
runtime. This assembly is installed in the GAC by RadControls setup
program. If you do not use the installer you need to copy it manually
to your local Bin folder, but you do not need to add that reference. You can find more information in this blog post.
That said, you should be able to run your application by simply
removing the line, shown in red in the error message, from your
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