Then loaded g-code, and when I clicked Run, I got a:
Darwin Buffer Error - Motion out of bounds.
This happens in the same place every time, after the initial Z move.
After re-enabling, Cycle Start jumps ahead about 20 lines and runs through the rest of the g-code.
I don't have a machine hooked up, but motion is very erratic. On a long rapid move, the feedrate is jumping all over the place, and it's visible on the toolpath display. Happens on G1 moves as well. With a feedrate of 75ipm, I'm seeing feedrates down to 1, jumping around everywhere in between 1 and 75.
Tried jogging from Mach4, and I'm seeing the same erratic feedrates. CPU usage is in the 5-8% range.