Rekordbox 4.4.0 Cannot export all the playlist at once: ERROR

After updating i'm not able to export multiple playlists at once without getting an export error message. Doing the same thing with group of playlist seems to work but when everything ends with no error and i insert the USB stick in the cdj-2000 nexus and load one track that is perfectly showed in the playlist the cd player says it cannot find the file or the file is corrupted