These problems are not limited to CS Labs products, as many Mach3 motion controllers have probing issues. The makers of MachStdMill only support it with the parallel port, and Smoothsteppers.

http://www.calypsoventures.com/forum...c.php?f=4&t=62

This is a big reason that I'm moving to UCCNC. With Mach3 (and Mach4), you are relying on two different companies writing complex software that need to interact with each other flawlessly. Changes in Mach have frequently required new or updated plugins.

With UCCNC, software and firmware are developed by one team, simultaneously, so all features always work as they should, as soon as they are released. And bug fixes typically happen in a few days, if there are issues.