Odd to learn of this. My Traktor works flawlessly on 10.10.1... No problems, glitches or freezes... I'm curious as to your setup and any conflicting apps that may be causing your problem.
Macbook pro mid 2012 basic spec, with 8GB of DDR3 1600mhz RAM, no external equipment used whilst trying to open Traktor, and I'm not sure how to get an entire list of apps. But I've tried a full system reinstall, tried several versions of Traktor and nowt. What I have noticed is that the audio box on the UI has a red line through it (the program opens, shows the decks and the initialization screen, and then becomes unresponsive) so it looks like it's an extension of my audio problems - my guess is that Traktor has an issue with finding the core audio driver, panics and then goes into an infinite search loop.
Edit: given up, downgrading to Mavericks.
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