It wont show my playlist

Hi guys, need your help..

It happen yesterday when I play using CDJ 2000 Nexus and my Rekordbox version is 2.2.4. When I connect my USB into the CDJ, it only read [Content] and inside it only show [Folder] it wont show the normal display e.g [Track], [Artist], [Playlist], etc. And thew waveform didn't appear.

Is it because the setting on CDJ or tbecause the CDJ need upgrade on the Firmware? Since when I play on other club which using also CDJ 2000 Nexus, this problem didn't occur and everything run smoothly..

Thank you..