Problems with the new printer

I have a 840 Stepcraft CNC with the PH-40 printer. I have not been able to print anything yet. I downloaded the most recent version of the Cura and loaded the yellow S into the Cura. When I try to export the G code, the program crashes and a massage comes up as Cura.exe not responding. I did try as an administrator also and did not work. I tried earlier versions of the program and so far have not found one that works. If anyone has any suggestions, I would appreciate the help.