I got OpenNI and PrimeSensor working just fine. Turns out you can't have the official SDK installed along with PrimeSensor or it screws up the drivers. Now my problem is because I used the 64Bit version of OpenNI the kinect server for greenfoot won't open due to OpenNI.dll not being there. Well it is there just called OpenNI64.dll and is in "Program Files (x86)" instead of just "Program Files". What can I do to fix this?/