Posted 21 Mar 2013
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From the error you are getting, I think you are missing the "Telerik.Web.UI.Skins.dll" or there is a chance of specifying the skin name incorrectly. In order to add skins to your RadControls, you need to make a reference to this particular DLL. Either you can add this at the time of project creation as shown in the attachment or using the "Add Reference" option on right clicking the Bin folder. Also note that Skin name is case sensitive.