Has anyone ever used the Ajax Control Toolkit in SP2013? It seems that I don't get it working.
I've added the AjaxControlToolkit.dll to my package (with safecontrols) And in my masterpage I reference to it by:
<%@ Register TagPrefix="ajaxToolkit" Namespace="AjaxControlToolkit" Assembly="AjaxControlToolkit, Version=22.214.171.1245, Culture=neutral, PublicKeyToken=28f01b0e84b6d53e" %>
But I still get the error message:
"Could not load file or assembly 'AjaxControlToolkit' or one of its dependencies. The system cannot find the file specified."
After deployment I do an "IISRESET" and the AjaxControlToolkit.dll can be found in the GAC