An update to Photo Mechanic 5 in late 2013 (build 15077) caused the built-in DF Studio upload template to stop functioning as expected. See Install the Photo Mechanic 5 DF Studio Upload Template for instructions to update to the latest version of the plug-in.
A significantly updated version of Photo Mechanic 5 is also available for download from the Camera Bits website: camerabits.com/downloads