You need to be a bit more specific for which program you need the post processor. I used the ones for Mach and UCCNC and it worked well, I still remember that in WinPC.. (I forgot about the exact name) I had to change some settings in WinPC.
p.s.: At the moment I use the UCCNC withouit problems.
Frank
Steppcraft 600/2 + HF500 + SwitchBox + Laser + Schleppmesser
Absaugung und Vakuumtisch
an Mach3 oder UCCNC mit Taster für Z-Null und Werkzeuglänge