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Code 4:Sound Device Error

Sound Device Error

This error can be caused by one of the following:

  1. No Recording Device available
  2. No playback device available
  3. The default playback device is exclusively controlled by another app and cannot be used from Luppet.
  4. When using a device with a sampling frequency of less than 44.1 kHz

For 1or2:
Try reviewing this setting from Control Panel -> Sound, as shown below.

For 3:
For example, WDM in VoiceMeeter Banana uses exclusive control, so the specified playback device cannot be accessed from Luppet.
Consider setting other devices to WDM or MME.