On my Android 4.4 phone, AirDroid is creating some odd folders on my SD Card.
For most of the App data, everything is properly being stored in /storage/emulated/0/Android/data/com.sand.airdroid/
However, it creates an empty folder in /storage/emulated/0/storage/emulated/0/Android/data/com.sand.airdroid/files/cache/ even though it is properly storing cache files in the /storage/emulated/0/Android/data/com.sand.airdroid/files/cache folder.
For most of the App data, everything is properly being stored in /storage/emulated/0/Android/data/com.sand.airdroid/
However, it creates an empty folder in /storage/emulated/0/storage/emulated/0/Android/data/com.sand.airdroid/files/cache/ even though it is properly storing cache files in the /storage/emulated/0/Android/data/com.sand.airdroid/files/cache folder.