Could you try one of my tests and see if that works for you? (you can ignore the PWM part)
you can find a zip here:
https://drive.google.com/file/d/0B27_4JL_xnCqY0M0Smc2T2w0YVU/view?usp=sharing
don't forget to replace the ofxKinect addon with the one you find in the zip (backup the old one!),
I think I may have made some modifications to it a while ago to get it to work on the RPI2 (but I forgot to document).
Also read the readme of the addon It tells you to copy a rules file to /etc/udev/rules.d so you don't need to run with sudo