If you hit a crashbug (and you have compiled yourself from source): Go back into the source directory, and rerun configure with the same options and settings, just add --with-debug: ./configure --prefix=/usr/local --with-debug The force rebuild everything again and install (cflags changes isn't detected by make) make clean all install The run ocp again within gdb, and give gdb command r for run (and hit enter) gdb ocp (gdb) r Next time ocp crashes, give gdb command bt (and maybe other commands if you are in contact with me). This is the stuff I want sent to me (along with config.log from the source tree). (gdb) bt #1 123123 #2 123123 #3 32131 In order to quit gdb and ocp, give gdb the command quit. (gdb) quit