nanoCAD forum

Downloaded and registered NanoCAD free yesterday. Have tried twice to create a simple drawing. Both times I was able to save and reopen the drawing as I was working on it. After an hour, I went back and got the attached "Unknown error" Message.

Got the same message with the .bak file, and the original file was a very old version of the drawing (maybe the first one I saved).

File is attached for review. I am not worried about recovering the file, but don't want to keep losing my work. Any advice would be appreciated.

Thanks,
Cam