This appendix is for Unix users. I dont know if other platforms have similar features, that when the program crashes unexpectedly the OS would dump the contents of the memory of the crashing process into a disk file for later inspection. First make sure that PvPGN has been compiled with debugging ("-g" parameter to gcc) and with no optimizations ("-O0" parameter to gcc). PvPGN default build process puts "-g -O2" so you need to edit Makefile file before compile and change it to "-g -O0". Then something like "make clean; make". $ /path/to/bnetd -f $ gdb /path/to/bnetd /path/to/corefile