Autoleveller

Is there anyone who knows the answer to this question?

I'm using a 6040, 2.2Kw CNC with Mach3 with USB connection. I've tried everything that I can possibly think of:

- Read about the "aircuts with USB mach3" and tried to add those lines
- Became member and downloaded and installed the latest Autoleveller
- Grounded my spindle
- Changed USB cable to ...