Control surface No longer works for Nuendo 11

Hello the Nuendo 11 no longer lists my Radikal Technologies SAC 2.2 control surface in the list. I Spoke with Radical and they stated they never wrote an XML file for Steinberg. Recommend contacting them and asking for the SAC support.
I Looked for the xml file in older versions to place in the new program with no luck so gave up resorting to using Nuendo 10.3 still.
Any Ideas?