I had same problem. I think it is caused by MATLAB not recognizing Kinect. In my case, I do:
1. Connect Kinect to PC before running MATLAB/Simulink.
2. In Matlab run mux -setup and SETUP_KINECTSDK again.
3. Open Simulink.
It helped with my problem.
I successfully run SETUP_KINECTSDK but when I ran some example this message appears.
Error reported by S-function 'sfun_nid' in 'nid_cvst_image/NID IMAQ':
NID Error: Failed to initialize NID. It might be caused by
- NID is not connected.
- NID unsupported block is used in the model
please help me to solve this problem
thank you in advance