The following solution is for those using Xcode 4.4 or above :
This problem came up way too many times for me. I tried using the
kinect cinder block that is on Cinder's Github account first and hit this error immediately. After that I went back to Github and found
joshua nobels fork of the block. And again the same error "Obj is a protected... yada yada yada ". Then I turned to the forums and found this post for which I've tried all of the solutions, but none worked for me.
So I decided to start moving sh** around in the kinect.h file where the protected struct "Obj" is declared. I'm not sure if this has any side effects in the long run, but I Cut && Paste the 36 lines that composed the struct and moved it out of private and into public ( 9 lines above from where it use to live ) and it built without a problem.
Note : Cinder's version of the block is over two years old with no maintenance whatsoever. So I recommend using joshua's version since he has just recently updated it to use the latest release of the freenect library. And if you do you'll have to change a line in the libfreenect.h file the line that reads:
#include <libusb-1.0/libusb.h>
to
This tells the compiler to look for the file locally in your cinder block folders instead of trying to search your systems folder.
Anyways... hope this helps.
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