Hi,
I am not sure what version you are running but there was a bug with this message a long time ago. Try this:
1. Go to the Control Panel>>Display
2. In the Windows Display Properties dialog, select the "Themes" tab
3. Change the theme to "Windows Classic".
If this doesn't work, select View>>Grapher and you should be able to print your result in here. You can also do a screen capture and paste the instrument in Word and print from there.
Tien P.
National Instruments