Turn off double sided printing in Distinctive
By default, DS and/or the printer company will default to printing double sided.
follow these steps to set all print by default to single sided
Distinctive PC
Go into DS
Select File>Page Setup
Select the printer you plan to use from the list and select properties
in the subsequent menu, find the double side setting and set it to single side
Local PC
You may need to do this for the local PC as well. Changing the settings for the virtual PC does not necessarily fix them on the local PC.
Go to Settings>Printers>[Your Printer]
Select properties
Change to single sided (will vary by printer)