My Photo gallery has double the pictures. I noticed that the path is slightly different for each duplicate picture.
Example:
Picture 1 = Path: /storage/emulated/legacy/sugarsync/pictures
Picture 1 Duplicate = Path: /storage/emulated/0/sugarsync/pictures
Example:
Picture 1 = Path: /storage/emulated/legacy/sugarsync/pictures
Picture 1 Duplicate = Path: /storage/emulated/0/sugarsync/pictures