I have it all backed up on 3 hard drives so I’m going to experiment on one of them I think. Thanks for the help though
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this happens because deck 4 momentarily becomes the LEAD SYNC (master) so the others adapt. It should be possible to select who should be master and who should not. Even if you have deck 4 with SYNC turned off, it still competes to become the master.
For me, there’s more positive than negative impacts from the upgrade. The only issue that impacts me is the missing data (BPM, etc.) from my Tidal library. Nothing else is a deal breaker or broken so badly as to cause me to pull my hair out (I don’t have much anyways). I’m sure Denon DJ is working to get it right.
I’m sticking with 2.0
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Thanks DjAj.
I’m only occaisionally use the sync feature, so the process I used seems to match what the manual says: ""To activate sync, press Sync on the deck that you want to control the BPM, which becomes the “master.” “” Not sure why turning to another deck would cause that to compete to become master. There doesn’t seem to be any way to “lock” the master to avoid this.
It’s really no big deal as I said I don’t use that feature massively, but it is strange as I can definitely tell that this has only manifested since the upgrade…
With version 2.0 it is not necessary to activate SYNC on the “master” deck. You can only press SYNC in the “slave” deck and it will synchronize with the master deck. Now you will ask yourself: “But how do I know who is the master of my 4 decks?”. And I answer you that there are some methods:
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The master is the deck that has been playing music for the longest (in theory).
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The master becomes the one in which you varied the pitch fader position (if you have SYNC on).
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Surely (I hope so) in the next releases the guys of the Denon DJ Team will make it clear to us Prime 4 users who is the LEAD SYNC and who is only SYNC without being the leader (i.e. the slave) using some icons on the display.
So if you have the SYNC button unlit, this does not guarantee that that deck cannot become the LEAD SYNC. 
They will surely fix this defect too.
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Hey folks, The waveform alignment / Parallax issue is known and we are working on a fix for it. Thanks to everyone who took the time to report it. The main thread can be found here: [Confirmed] V2.0 - Waveforms only sync on white centre line - #72 by alphavicen
There are 2 issues which DJonboard has posted which we’ve been having difficulty reproducing here. If anyone has additional info, has seen these or has any ideas on how to reproduce these issues, please comment in the respective posts:
https://community.enginedj.com/t/missing-entry-in-playlist/35983/2
https://community.enginedj.com/t/missing-waves-in-2-0/35752/17
LIBRARY ISSUE:
- put a track from your library (scroll down and choose a track from the middle of your collection) to a playlist on the left side. ISSUE: the library scroll automatically to the top
HOW SHOULD IT WORKS: when i put some songs Into the playlists, the library has to STAY and not automatically scroll to the top.
Do you understand now?
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Looked at both video and I don’t have either issue. It’s obvious that he’s had problems (he has the videos to prove it). I’ve played events twice since the upgrade (5hrs & 4hrs) and nothing critical happened. I’ll admit that the ‘bugs’ are unfortunate and shouldn’t happen, but hopefully the team at Denon DJ is on top of it and will be quick to correct them (even incrementally like what SoundSwitch and Serato does).
Regardless, I’m liking the technology and encourage Denon DJ to keep pushing it…just do a wee bit more testing and fix the flaws a little quicker…
Also the buyer should Say : “thank you Denon to fix EVERYTIME the bugs of software you put on the market”. Right ? Unbelievable.
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Yes of course. Thank you Denon ! 
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Some of the FX sound horrible too like echo.
Welcome back to the Fanboy community.
@djonboard, Are you on this forum to get to get things right or just to vent? It’s obvious that you’re having issues and it’s obvious that @AIRVince from Denon DJ has taken notice and is sharing your post with the community to help resolve them.
I don’t know if you’ve ever dealt with Apple, Microsoft, Serato, Pioneer DJ, or Rane before. Have you known them to be perfect? Ever notice that they send updates/fixes once in a while?
I’ve read one of your post about an iTunes file. I’ve also had an ITunes issue in the past and it turns out it was iTunes’ fault and not the firmware on my equipment. I probably know the fix for your issue but I’m really not inclined to help out.
Your venting is well documented. Let’s move on to the fix.
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Where did the crates go? I only have playlists now… i miss the crates!!!
playlists are the new crates…same same
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No, with Rekordbox, Traktor and Serato i never had compatibility problem with iTunes. engine Is not a strong software, 20% of function compared with the 3 mentioned, and with a lot of issues. If you select more Tracks, the last One goes immediately in edit status… Disaster.
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And how’s the no-laptop-needed versions of those softwares working out?
DENON Is not ready PIONEER Is not ready but Rekordbox Is a Pro Software and Engine Is not. Where are tags ? smart Crates?
want want want!
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Your fix is simple; Go back to a laptop dependent software.
For Rekordbox that would mean:
- Rekordbox Controller (minimum DDJ-1000)
- High Spec Laptop (i.e. Macbook Pro)
- Monthly Rekordbox subscription
TOTAL: $2500 (U.S.) + monthly subscription
Believe me, Engine DJ has a long way to go, but NO ONE in the industry is pushing new technology like Denon DJ is. It’s no ways as to where it needs to be…but I like what Denon’s doing and I’m enjoying it.
I still have club-level equipment from the competitors, but I find myself more and more inclined to use my Prime 4 and SC’s over my 2000’s and DDJ-SZ.
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