If you are getting this message…
You will need to turn off data execution protection on your machine.
Right click on Computer, and choose Properties
Click on Advanced System Settings, and then under Advanced, click Settings
Select the “Data Execution Protection” tab, and then click “Turn on DEP for essential Windows programs and services only”
Restart your computer and you should now be able to run TurboCAD.
MY DEP was set this way form th estart and still crashes with file open and try to seelct soemthing from the oeptions menu.
Any other options to look?
You may also try right clicking the TurboCAD icon and selecting run as administrator. You may also try disabling user account control, it has been known to cause some issues with some programs.