Currently logging to "gdb.txt". Logs will be appended to the log file. Output is being logged and displayed. Starting program: /usr/bin/pd -stderr /home/joliver/MANO/track/main.pd [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". [New Thread 0x7fffdae27700 (LWP 5859)] [New Thread 0x7fffda624700 (LWP 5860)] Program received signal SIGSEGV, Segmentation fault. 0x00007fffe18f7291 in pix_mano::processGrayImage (this=0x827110, image=...) at pix_mano.cpp:761 761 if (base[chGray + xcoord] == 80) { // if we find a point Kill the program being debugged? (y or n) Undefined command: "logging". Try "help".