I think 'Bus error' usually indicates data alignment issues, some 
datatypes have to be aligned at a specific address before they can be 
accessed. You should compile the package with 'INSTALL_UNSTRIPPED=YES' 
and '-O0 -g3' CFLAGS/CXXFLAGS flags set in your mk.conf, run the binary, 
wait for it to produce core dump and examine it with gdb.