Error Creating Control ....
PublicKeyToken=121fae78165ba3d4'
1) Copy Telerik.Web.design.dll to the Bin folder of your application. No need to add a reference to the web application just copy it.
2) Search ProjectAssemblies folder under C:\Documents and settings\\ and delete the folder or If Vista or Win7 search it under c:\Users\
3) Restart Visual studio
Adding Telerik.Web.Designer.dll to GAC solved it for me. Using VS 2010 on Windows 7, .NET 3.5
ReplyDeleteJust drag the dll to GAC
dll could be found here
C:\Program Files\Telerik\RadControls for ASP.NET AJAX Q1 2011\Bin35
Use Telerik's new installation utility to download your new update. It will clear out OLD versions of their tools and correctly resync the designer for you.
ReplyDeleteThat fixes it, and it's automatic.