snake67: I can't confirm this, but snd_tune indeed didn't work in an old beta version. Maybe you just clicked on the wrong place? Please check the engine version in the startup message.

Superku: I can't confirm this either - I don't get that error when I enter your code in the example that you've sent. Can you send an example where this happens?

MTD: There is no difference in code execution between Test and Debug Mode, but there might be a difference in timing - in debug mode the script runs slightly slower. If that caused problems, it can only be fixed in the script - it's unrelated to the beta version.