Help: unable to select Digirig after RPi 4 update

Recently I tried to use your recommendation to crrate a dual RMS for packet and VARA FM. It had worked the first time I tried it about a year ago. Now when I load your hack I get this response:
ALSA lib pcm.c:2664:(snd_pcm_open_noupdate) Unknown PCM digirig-tx
ALSA lib pcm.c:2664:(snd_pcm_open_noupdate) Unknown PCM digirig-dmix
ALSA lib pcm.c:2664:(snd_pcm_open_noupdate) Unknown PCM digirig-rx
ALSA lib pcm.c:2664:(snd_pcm_open_noupdate) Unknown PCM digirig-dsnoop

Any idea what I am doing wrong? Thank you!

@buzz we’ll need more information from you. Please provide the following:

  1. The contents of your .asoundrc and/or /etc/asound.conf files (whichever one you use).
  2. The output of this command: cat /etc/*-release.
  3. The output of these commands (make sure the DigiRig is plugged in when you run these commands): lsusb and aplay -l and arecord -l.
  4. Are you using the same OS and version that you used a year ago when you had success?
  5. Are you using the same DigiRig model as you did a year ago?
  6. Are you using the same computer hardware as a year ago?