XDJ1000MK2 Loading Error (C7D9) via Link

Hi all, 

I recently get Error Messages when loading some tracks to a connected XDJ1000MK2 and DJM900NXS Setup. The Tracks worked the week before and I did not changed anything on my Laptop. 

The XDJs are Connected via Direct Link Cable and The Macbook is connected via USB to one of the XDJs. 

When I load specific Tracks, I get an Error: Could Not Load Track E3805 (C7D9)

When I export that same track to a USB Stick and put that into the player it works with no problems. 

Any ideas?