I keep getting this error when I run a example code from SimpleOpenNI such as NoSuchMethodError: You may be using a library that's incompatible with this version of Processing.
I have tried in vain everywhere to find and properly install an OpenNI version that is compatible with OS 10.11.5 AND can be used by Processing! I have OpenNi SDK (v1.5.7.10) + NITE(NITE-Bin-Dev-MacOSX-v1.5.2.21) + SensorKinect-unstablev5.1.2.1. + libtool + libusb but as read here: https://github.com/processing/processing/wiki/Supported-Platforms and here: https://github.com/processing/processing/wiki/Changes a lot of things have changed with Processing 3.1.1.
Does anyone know of a previous version(s) (processing, OpenNI, NITE, etc) that will work with my MacOS, a link to a tutorial, or have had the same problem but fixed it somehow?
The first thing I would try is downgrading your Processing to version 2.2.1. You can get it here.