local inst = mc.mcGetInstance()
local hreg, rc, ignoreDustBoot
hreg, rc = mc.mcRegGetHandle(inst, "iRegs0/nf/TRC/IgnoreDustBoot")
if (mc.mcInEditor() == 1) then
   mc.mcCntlSetLastError("crap")
end

This fails on Windows 10. One Windows 11, success. I've installed the latest VC++ package on windows 10 which fixed a machipc.dll error I was getting previously.
The register exists and has a value of 1. the rc code is 0, but hreg is 0 also. This should work. It's part of a larger script which has stored values for the dustboot location.

Colten.

Are you executing this inside ZeroBrane to test or from within Mach? Which build of Mach4 are you using?

This line: mc.mcCntlSetLastError("crap") is also missing "inst"

the missing inst is fine. it'll error for me in the log. Zerobrain studio. Which should have access to the registers or how can you debug a macro? Like I said though, this works on my windows 11 machine but not on my windows 10 where I have the controller. originally I was using my windows 11 machine which is 20ft away from the machine. I had the ESS setup on the local network of 192.168.1  instead of it's own separate net of 10.9.9.. I was debugging a script for removing a dust boot and putting it back on by single stepping through it. I was using registers with a screen of DRO's for modifying values and a couple of buttons (ignore remove, led for location of boot).

When I  first started using the win10 pc, I was missing the VC++ redistributabe packages and machipc.dll was failing. I installed the latest version of it, and that fixed the problem with the debugger not being able to run. Might be related.