Have been completely MY fault!
I see a some of you guys having issues with computers, mechanical issues, etc - and I am fairly lucky I guess I have been running nearly 10 months now without any issues that have not been my own fault.
Usually happens when I am trying to go too quickly, loading material or forgetting to set the zero, or starting the wrong program, etc.
I dont envy not being able to find the problem and resolve it. I am actually very relieved when something doesnt work right, and I can figure out what I did to cause it to go wrong!!
AJC