Unable to move a file on my Note4 after being copied to AirDroid?

I copied a .wav file (about 22mb) to my Note4, click on files on my Note4, go to received, select the .wav file, and cut it and when I go to my external media card and try to paste it into my notifications folder I get a failed to paste message. I also tried to copy it. Why will it not work?
Thanks.

@huskoid
Do you transfer files to your mobile via one of the AirDroid clients? Which client are you using? web.airdroid.com or AirDroid Win/Mac? The error message?

A possible cause: Android 4.4.x has no access to external SD card.