I am having the same problem on Visual Studion 2012. I have removed and readded the telerik dll references and still keeps happening. It is only with the RadDatePicker control. Sometimes if I manually add the line Protected WithEvents radDate As Global.Telerik.Web.UI.RadDatePicker to the .ascx.designer.vb file it works, but then the line disappears when that file is updated. I am using the latest release of the teleik controls version number: 2012.3.1308.40
answered on 24 Jan 2013, 02:49 PM
Is your set-up under SharePoint 2010 or outside of it?
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It is in a User Control in web forms project. I am sorry when I read this post I did not realize the forum that I was in. I update the control suite using the Control Panel application and the problem has not reoccurred.