Let be honest. There is no C++ code available. Yes the python code for the browser and hbbtv applications is available... But it is no use since the enigma is locking itself on some channels when try to access hbbtv. So in my opinion the problem is somewhere in c++ code.
I experience this for example on rtl 2 HD on 19,2 E. When i try to access hbbtv sometimes nothing opens. Another case is complete locking of the box that i cant recover.