I have a MVC project that I just upgraded from 220.127.116.11 to 19.1.6 and now NONE of the DevExtreme HtmlHelper controls are rendering.
I also upgraded DevExtreme.AspNet.Data to 2.0.0 to 2.5.1
I have prepared a small code example that uses the latest versions of our libraries included in the standard DevExpressDevExtremeSetup-19.1.6 installation. According to my test, everything operates correctly. Please check the sample I attached to see if it operates correctly on your side too.
Generally, you can use our Project Templates to create a pre-configured sample. It should contain the valid references of all the required libraries installed along with our components. If this does not help you, provide us with the problematic sample where the issue is replicated. Thank you for your time and cooperation in advance.