I can't see the .png files after choosing to use a custom icon. Do you have to change them to a .jpg extension or something? My steps.
1. Downloaded the zip file
2. Extracted files
3. Moved to my DCIM folder
4. Placed all the .png files in my camera folder.
5. Long pressed a dock icon
6. Chose custom icon
7. Once the gallery opens I can see all my pictures that are in the same folder as the .png files, but not able to see or chose a .png file.
Any ideas??