What kind of hard drive are you using? If it's non-flash based (ex: SSD, Hybrid), you're probably falling victim to the Mac's Sudden Motion Sensor as a result of the laptop vibrating.
Last night while DJing on a stage with a lot of people dancing- in other words my laptop shaking, suddenly the sound stopped. Traktor appeared to be playing as normal but the levels on the 900 mixer were frozen. The only way to get the sound back was to restart the mixer. Then everything was fine. 5 minutes later it happened again. Reset- fine. And then again, but now the next few times it happened it left a high tone (sounding like time code) blasting through the mixer. I turned down the individual channels, but only the master volume would stop the tone. Then turning off the mixer and it would start playing. Traktor played on throughout this making me think the problem was all the mixer. But after 5 crashes in the space of 10 minutes I had to ask the next DJ to come on as I was ruining this party and looking pretty unprofessional! The following DJ played on cdjs and had no problem at all. How could Traktor be crashing the DJM??? I was connected to the mixer only through audio cables btw, not USB.
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What kind of hard drive are you using? If it's non-flash based (ex: SSD, Hybrid), you're probably falling victim to the Mac's Sudden Motion Sensor as a result of the laptop vibrating.
That's what I thought it might be but I have an SSD internal drive - so apparently no SMS installed. Even it it was that- which may stop Traktor playing- how could it freak out the DJM 900? The meters on the 900 froze and the only way to get the sound back was restarting the mixer. Traktor didn't crash.
It's a bit odd to hear that you were connected via audio cables and then the next DJ to play on CDJs (effectively using the same connections to the mixer) had no problems. I would have guessed it to be a mixer defect but if it worked properly for him...
using exactly the same connections, I unplugged the cdjs when I plugged my Audio 10 in. I know- I can't understand it at all. The owner of the club kept saying- it's happened before with people who play on laptops....
It shouldn't - but they should send the mixer for servicing. There's nothing unique about the audio signal coming from an audio interface rather than a CDJ that would cause the mixer to crash.
Same thing happened to me yesterday at a gig. Only after a shock to the mixer and the mixer was moved because a guest fell on the DJ decks. I think the USB driver between the DJM and the Mac somehow gets stuck up (probably because the USB connector was moved during the shock) and this messes with the mixer somehow.