[CLOSED] DECK 2 UNRESPONSIVE DURING GIG

I was DJing a semi formal event and through the middle of the night, my deck 2 stopped loading songs to it and the pitch slider for deck 2 stopped responding for deck 2 as well. I tried to drag the song to the deck but it won't load onto it and I also tried to load it using the load button on the controller and still nothing. I ended up switching to my 4th deck and the same problem occured after about 10 minutes, but I pressed the key lock on and off , and the 4th deckstarted working again.

I was using a new retina macbook pro 15" with a quad core i7, 8GB of ram and dedicated video memory as well as a 1gb video card running on 10.8.3 OSX Mountain Lion. (its the latest macbook pro retina display made in early 2013).

My Latency was set to 512/10ms.

What is the problem and why did it occur? I can't have this happen to me at my bigs as it proves to be a huge liability.

Please get back to me ASAP THANK YOU!