I bought the DDJ a few months ago to downsize mobile kit from my ever so reliable, but heavy turntables. Free download. I've been reluctant to use it at gigs as the few times I have it has been glitchy on startup, and has unexplainable behavior issues. Well yesterday was only my 5th time using it for a gig, and it left me high and dry, I will probably never use it in a professional environment again. Upon start up, my software would not respond to my hardware at all, but it did recognize it, and I could play music in internal mode and get sound out of the controller. The only thing that worked was the master volume, no upfaders, nothing else.

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So after rebooting my computer and the software a few times, my comp wouldn't recognize my controller at all. I went online to make sure all of my software and firmware were up to date and authorized, I even deleted and reinstalled. I looked for people with similar issues and tried what they recommended, which were to make sure the DDJ wasn't selected as my default sound card, and to delete and re-add it in the Audio/midi setup. But since my computer didn't recognize it to begin with, I couldn't delete it. After 5 hours of fussing with, still no luck. I got through the gig with mixes on my phone, but it was pretty much a complete failure, and at the end I couldn't accept payment for as the client knew of the issue.

I have a well-equipped Macbook Pro running 10.8.3, using Serato DJ version 1.1.2. That last time I used it was a week ago with no issue. I think I went online within the past week to make sure my software and firmware were up to date, but that's the only change I made and shouldn't have this sort of impact. I'd appreciate any help solving this issue so I can sell it asap and try to cut my losses.