Good morning all, After giving the little computer a rest for the night I took the Nuclear Option and re-installed Roon. Once I did that everything went into “update mode” and my whole Core came back on line just as it was before it went kerfluie. Even went back to the exact song that was playing. Also Roon ARC has now on my machine for two days and is working perfectly. Obviously some new update was able to overcome the limitations of my old router. I am a Happy Man again!