What's the equipment requirement for Scaler 2.

Scaler 2 Support
1

I’m using Audacity with PC speaker. No any midi input instructment.

In Scaler 2 window, I can’t hear any sound when I click the piano panel.

Sometimes I will get an exception, then my Audacity die.

ScalerAudio2.vst3 + 0x2df81f8
rsp = 0x00000033ee6fd810 rip = 0x00007ff8112f81f8
Found by: stack scanning

Stack contents:
 00000033ee6fd810 78 00 00 00 00 00 00 00 60 00 00 00 00 00 00 00  x.......`.......
 00000033ee6fd820 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
 00000033ee6fd830 00 30 52 ee 33 00 00 00 9e 3b 3c a4 f8 7f 00 00  .0R.3....;<.....
Possible instruction pointers: