Hi there,
and welcome here…
So , Check out the Drag & Drop Testing Thread, There is an example for the SD card . See if that helps.
The Sense has everything in there. Also have a peek at the Round display with a Sense on that too, Two SD cards…
The Gif Viewer is a good one to check loads and uses the SD card for the Winking Monkey Gif 
HTH
GL 
PJ 
If you use the code tags “</>” and paste it in there , we can look .