I had the same problem with kp49, "A better camera" was able to take images but not processing them. However, the app worked at the beginning with kp49 but stopped don't know when, maybe after I upgraded CSSU at some point (I don't know because I didn't tested the app after each CSSU upgrade). So it might be that this issue is not kp50 related but something else (i.e. rather application fault than kernel fault).