it is licenced, will send you a privete message

Octavio

Well...

I have changed the stepper and the driver and the problem persists.

Have tested with the oscilloscope and the driver continues to receive pulses when mach3 goes nuts, but the DRO does not updates correctly but haven't been able to reproduce the problem consistently, so I can´'t give a base to investigate the problem.

Now I am going to install a second hard disk with a fresh english windows XP installation and will install only mach3 on this disk just to see if this solves the problem.

will give some news in a few days.

Regards: Octavio

Well... it's me again....

since I put a fresh English windows xp everything seems to be correct, so the moral is do not put anything you don't need in your mach partition

thanks