I'm using the ASP.NET AJAX Rad controls for asp.net 3.5 in Visual Studio 2010 for the first time. I have made it to the step of "ajaxifying" my RadGrid but when I open the Smart Tag (for any controls) the "Ajax Resources:" header appears but there are no options under it. I'm building a user control so I did not have a ScriptManager on the page so I tried adding one but it didn't change anything. Then I tried adding a RadAjaxManager to the page and that caused the "Ajax Resources:" header to disappear from the Smart Tag altogether. Why isn't this section appearing?