AjaxControlToolkit requires ASP.NET Ajax 4.0 scripts. Ensure the correct version of the scripts are referenced. If you are using an ASP.NET...

Sharepoint 2010'ta AjaxControlToolkit'in nimetlerinden yararlanmak istiyorsun ama bu hatayı alıyorsun:

"AjaxControlToolkit requires ASP.NET Ajax 4.0 scripts. Ensure the correct version of the scripts are referenced. If you are using an ASP.NET ScriptManager, switch to the ToolkitScriptManager in AjaxControlToolkit.dll."

Üzülme, çözülmüşü var ;)