Do not install any Weiss drivers on your computer. If you have already installed the driver, remove it using the uninstall option on the Macintosh (or Disable it in Windows).

You can just plug and play, no drivers are needed.

If, in Kyma, you have set the clock to be Word Clock, ADAT or an AES/EBU digital input and that clock source input is not receiving a clock, the DSP Status panel will let you select the AFI1 but will automatically switch back to the Silent Device.