Okay, so it's like spitting into the wind.

Bobcad/Cam has never produced code which crashed my machine. (I have...maybe you too) Maybe I should give "kudos". Bobcad gave me the opportunity to have a Cad/Cam in my little company which makes good profit, but not like a fortune 500 company. (think inexpensive)

jr, my sample size is small But my data is good. Maybe a few cosmic rays hit the "undo" button several times betwixt my saving and reopening. Anything is possible.

You want one question. How could it be that I draw geometries, save and close, reopen and the most recent geometries are there but nothing else?

Mr. Burr wants a file. this is not a file issue.