dub wrote:
This probably indicates that in the project you have ticked the option to reference a specific version, rather than leave it as "No". This would then allow later versions of the AjaxControlToolkit.dll to work against your module.
The AjaxControlToolkit.dll is referenced in the project properties but I dont see a checkbox requiring a specific version that can be unchecked. In visual studio which option can be unchecked that references a specific version?