Recently purchased this mill. I turned it on for the first time and homed it out. Jogged it around manually, ran the spindle manually, loaded a program from my laptop, all good. I then told it to get a tool. The spindle began the movement and the atc door opened. But then it stopped before getting the tool with the atc door open. Now it won't close and I can't do anything else with the machine. Anyone know what is going on here? Mazatrol/EIA (1993)