As I remember, I managed to get probing working with whatever the latest version of Mach3 was around when I installed everything - could well have been .062. You are using the CSMIO probing macros, I assume? The CSMIO firmware has built-in probing code so Mach3 itself doesn't control the actual operation.

What I found was that while probing itself worked, it all fell apart when you did things like tool height reset during an M6 tool change. That's when I went back to .028, as I didn't need any of the things in later versions. Although I only use Z probing at the moment, I did throw some temporary macros together for X and Y as well during setup and they all seemed to work fine. As it happens, I spent some time last night doing a proper job on my x/y macros as I want to use them with the Mach3 probing page for my next job on the router and I wasn't expecting any problems - I'm just using my z macro with z crossed out and x or y inserted (in crude terms!). That's with an IP/M.

It's frustrating to have to work around this kind of thing, though. If i have any IP/M problems, it will probably tip me over the edge to UC300/UB-1/UCCNC, which should be hardware-compatible with the IP/M (24V signalling, etc) plus dual-motor homing and supported software! At the moment, though, it's hanging together (with manual dual-homing...) Don't know what the IP/A replacement is, though, if you need analogue servo driving.