I use Samsung BAR Plus 32GB and have CDJ-850
And i have some problem.
I prepare a flash drive in rekordbox
Then I insert first time flash drive in CDJ - 850 and it's work great.
But if I second time insert the same flash drive in CDJ - 850, it's will freez CDJ.
No one button not be interact with me.
I recorded a video about it - https://www.youtube.com/watch?v=yg0Mh2iLw1Y
After 3th days formating and exequting whit flash drive i found the solve.
Just delete file on flash drive USBMNG.DAT
by path %flash_drive%:\PIONEER\USBANLZ\
And so every time you remove the flash drive from CDJ-850 (about ohter models i dont know)
I opened to read this file and see that have about 25 000 row of information!
And questions to Pioneer:
1) For what this USBMNG.DAT file is created all the time, again and again on a flash drive
2) Can you fix it in next firmware update, pllease?