I am having the same problem. I am using Audacity and Voicemeeter Banana. Everything records fine… but if I go to playback the audio in Audacity I get the “Error opening sound device” error message. I then change the project rates (Hz), and then I am able to playback the recording, then the next recording I have to change the (Hz) back again.
I have matched up the Hz in windows sound as well as Voicemeeter and am not sure what the issue could be.
In recording device I have set it to VoiceMeeter Output (VB-Audio VoiceMeeter VAIO)