Got things working again. Many thanks to Kevin at Oneway. With his help and a couple of downloaded manuals from the internet I was able to track the problem to a sticky emergency shut down switch. I've disabled the switch and will give it a good cleaning, if that doesn't work Kevin offered to replace it for free.
To those who talked about the other Oneway unexplainable shut down problems. Some said it was when they were turning "large" chunks of wood the problem happened. Check the breaking setting on the control panel. Your inverter may not be able to handle the breaking on a heavy load if its set to break quickly. That has happened to me in the past, always goes away when I switch to slow breaking. I knew that wasn't the problem here because the lathe would shut down even under a light load. As for the rest with mystery shut downs, when and if it happens again, before you shut down the machine or retry starting, open the electrical box and note what the LED read out says. E.g. Mine read EF6. Translation: External Fault 6. I.e. the inverter is all right, it's an external circuit connected to S6 terminal. You can find the manual written for your inverter at the Yaskawa website