Rekordbox 5.2.0 has been released today and along with new features it also brings some welcome fixes. Make sure you always back up before upgrading.

[NEW]
-Compatible device added: RB-DMX1
-LIGHTING mode (rekordbox dj license required)
-KUVO Live Playlist which can share your playlist in real time.
Currently you can check the playlist only on KUVO beta website.
* KUVO official update is scheduled in March 2018.
https://beta.kuvo.com/account/login

[IMPROVED]
-Added an auto cross fade option to Automix. (Available when playing on a standby deck.)
-Added an option to perform Instant Doubles when the same track is loaded to a deck.
-Improved detection ability when database files in devices are corrupted.

[FIXED]
-Tracks were not sorted with alphabetical order on the explorer tree
-The windows’ width of My Tag configuration/Related Tracks list/Information/Sub browser got bigger if these windows are shown/hidden repeatedly.
-With DDJ-RZX, FX display was turned off when BEAT UP/DOWN was pressed while FX was turned on.
-On Windows audio driver of DJ equipment was not recognized if it was connected while only Lyric was selected in the global section.
-Video crossfader worked incorrectly in External Mixer mode.
-Audio output channels settings were not saved in External Mixer mode.
-Related tracks could not show tracks from intelligent playlists.
-Related tracks could not show tracks “From Selected Playlist” in the tree view in Ver5.1.0 or later.
-Improved stability and fixed other minor issues.