I convert the project from 4.0 to 4.5 framework, after convertion every thing is working fine in VS2013 and i checked it by deploying it in my local IIS. every thing is working fine. but when i host it in Client server, i am getting "The base class includes the field 'HTML1', but its type (System.Web.UI.HtmlControls.HtmlElement) is not compatible with the type of control (System.Web.UI.HtmlControls.HtmlGenericControl.) " in masterpage.
