I had updated the AjaxControlToolkit from 3.5.51116.0 to 3.5.7.123 to get ride of this error: System.NullReferenceException: Object reference not set to an instance of an object.
The above error is gone but according the site error log table googlebots are now having the following error randomly.
Could not load file or assembly 'AjaxControlToolkit, Version=3.5.51116.0, Culture=neutral, PublicKeyToken=28f01b0e84b6d53e' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference.
Please note that site visitors are not having this error at all only googlebots having this error randomly and I don't know why?
