Thanks, Will. We’ve checked all the wiring, and everything seems to be correct. Homing switches are lighting up as they should, and I’ve tried manually repositioning, but CM is still doing the same thing. (I didn’t mention this before, but several of the buttons in CM have been appearing without text ever since we started using it, despite several attempts to uninstall and reinstall. I was hoping that somehow enabling homing would fix that, but that’s not the case.) So, I’ve gone back into Settings and set “Has Homing” to “false,” and set $22=0 in MDI. No homing, and text still missing from buttons, but at least we can use the machine again.