Just received my Vivaldi stack (upsampler, DAC, clock) and am having trouble with the DAC not showing up in Mosaic or talking to the upsampler. dCS support is looking at this but I just thought I’d post here to see if anyone else has had and solved this problem. We have made sure the rs-232 protocol is binary, and even tried a different null modem cable all to no avail. Thankfully the unit plays via Roon fine but I can’t use Mosaic to try the different filters on the DAC or do anything on the DAC except via the front panel. Any ideas?