I don't see anything in the .xml.
You never answered my question. If you watch during probing, is it actually touching the plate on the second touch?
All the macro really does, is set the Z DRO to the plate thickness, when it touches the plate. I have no idea how your Z zero can be set incorrectly.
Are you using the parallel port? I see two port addresses, and two ports enabled, but nothing using port 2?
Another thing I wanted to mention is that when I use the toggle toolpath on/off button in off mode, the toolpath still displays but is locked from being able to be manipulated in zoom/pan, etc., until I turn it back on.
If I set it to off and load a new file the new files toolpath doesn't show up until I toggle the display back on.
That's just how Mach3 works. If you turn off the toolpath, it no longer gets redrawn, and remains as it was.
Now what's really weird is if I turn it off, then pull up the probing wizard (covering the whole screen), then close the wizard, when the main screen reappears the toolpath window is now solid white (black background before) with no toolpath being shown. Furthermore, when I toggle the toolpath back on it reappears with the black background.
When you load the wizard, you effectively are loading a new screenset. When you start Mach3 or load a screenset (or wizard) with the toolpath off, it's a blank white screen.
I looked again in the manual and it only says it toggle the toolpath on and off. I'm confused as to what is supposed to happen. I assumed the toolpath off meant it wasn't supposed to be displayed, maybe to help slower PC's and I sort of confirmed that with going to the probe wizard and back. Did you intend for the toggle to lock/unlock?
When it's off, it's not displaying anything, it just shows what was there when it was turned off. Even though it appears to display the toolpath when off, it doesn't, and it does indeed help on slower PC's, or with very large files, which can cause issues with even fast PC's.
The Toolpath On/Off button has the same functrionality as the one in the default 1024 screenset. That's just the way it works.