I am seeing this error message when I run my Visual Studio 2015 web application, plus several of my web controls are not recognized element when I drag and drop them on my page. Error message is
There was a conflict between "Telerik.Web.UI, Version=2012.3.1308.40, Culture=neutral, PublicKeyToken=121fae78165ba3d4" and "Telerik.Web.UI, Version=2015.1.401.45, Culture=neutral, PublicKeyToken=121fae78165ba3d4"
What is the proper way to correct this situation?