"Could not load file or assembly 'AjaxControlToolkit' or one of its dependencies. The system cannot find the file specified."

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

"Could not load file or assembly 'AjaxControlToolkit' or one of its dependencies. The system cannot find the file specified."

Üzülme, Çözülmüşü var ;)