CR-10S Says "In the Pause" at start and will not print file

Issue

Trying to print a new .gcode file on the CR-10S Pro V2 from SD card, but when trying to start the print, I just get an error on the screen that says "In the Pause" at top-left. The printer does not even try to reach temperature, and stop/pause does nothing. The print never starts. 

Cause

The .gcode filename is too long

Resolution

Modify the .gcode filename to less than or equal to 16 characters

Thanks to several sources for this issue, namely Reddit