HelpKnown issues

Bugs we know about and how to get around them.

Overview

Pioneer connection keeps shutting itself down (Windows)

What you see

• The players are found, but the waveform loads only sometimes or only for one player.
• The BPM is shown once and then stays frozen. Play, pitch and tempo changes on the CDJ are not shown.
• In the device list the players have the address 0.0.0.0 or a long address like 0:0:0:0:0:ffff:a9fe:….
• In the diagnostic data: VirtualCdj running: false, devices named beat-link with changing numbers (7, 8, 9 …) at the computer’s own address, and the log line Another device has claimed it owns our device number, shutting down.

Why it happens

On some Windows PCs the network hands incoming packets over with an IPv6 form of the sender’s address (::ffff:169.254.1.1 instead of 169.254.1.1). LJ Link then did not recognise its own announcements, took itself for a second device with the same player number, defended the number against itself and shut its connection down. A few seconds later it joined again with a new number, and the same thing happened. While the connection was down, no status, waveforms or metadata came in.

It is not your network, your cables or your rekordbox export. rekordbox and the USB stick are fine.

How to fix it

1. Install LJ Link 1.5.1 or newer from the releases page, or in LJ Link: Menu (☰) → Check for updates.

2. Quit LJ Link completely (icon next to the clock → Quit) and start it again.

3. Load a track and press play: BPM, play state and waveform now follow the player. The players show a normal address like 169.254.7.232 or 192.168.1.20.

Still happening with 1.5.1? Please send a report right after starting LJ Link, with the gear connected.

Direct cable and Wi-Fi: players twice or not at all

Without a router, computer and players give themselves 169.254.x.x addresses. With Wi-Fi on, the computer may send on the wrong adapter or receive every packet twice.

1. Switch Wi-Fi off on the computer.

2. Quit LJ Link and start it again.

3. Better: put a small switch or router in between, see network setups.

No titles, waveforms or beat grid from OneLibrary players

These players use the newer OneLibrary format of rekordbox. That is most likely why titles, covers, waveforms and the beat grid do not arrive: the open-source Pro DJ Link library LJ Link uses (beat-link) cannot read this format yet in the version built in. With the CDJ-3000X, tempo, BPM, time and play/pause do arrive and the tempo goes to the light desk as usual; for XDJ-AZ and OPUS-QUAD this is not tested. Up to 1.7.9 the deck kept showing “Loading track …”; since 1.7.10 it says Not supported after 30 seconds (alpha).

Support needs a newer version of that library and a test on real players; there is no date yet. Have such players? A report with the players connected helps.