When printing from SendPro Enterprise Stamp Applications using the Roll media option, the following error is displayed:
Black/Red on White paper installed now.
Change it to Monochrome media and click "Resume" button.
If you want to use the Black/Red on White paper then change the Paper type to "Black/Red" in the printer driver and print again.
The media that is loaded does not match the media the printer is configured for.
UPDATED: February 18, 2021