They know where I can download the ajaxControlToolkit dll for the 3.5 version of the framework, (I already look in many pages and nothing) I need it to correct the following error:
Error 208 Assembly 'AjaxControlToolkit, Version = 4.1.7.123, Culture = neutral, PublicKeyToken = 28f01b0e84b6d53e 'uses 'System.Web.Extensions, Version = 4.0.0.0, Culture = neutral, PublicKeyToken = 31bf3856ad364e35 'which has a higher version than referenced assembly 'System.Web.Extensions, Version = 3.5.0.0, Culture = neutral, PublicKeyToken = 31bf3856ad364e35 '
Greetings.