OK, I went to Mach4 4.2.0.4300. Now once I open Mach and then close it, I have to reboot in order to reopen Mach. It gives me an error when I try to reopen and says there is already a session open. Unplugging my PMDX-424 does not change anything. Funny thing is if I open Mach without being connected to the PMDX-424 it works great. Only have a problem when connected when I first open Mach. I was running 4.2.0.3481 and since I copied it into another folder, I tried it and it works great.
Anyone have any ideas? I switched because I started to get some funky behavior. Since I'm currently building a CNC lathe, I'm not sure I will get another PMDX-424 controller if I can't get this fixed. Reboots are a real pain.