(gdb) run Starting program: /usr/bin/mergeant Failed to read a valid object file image from memory. [Thread debugging using libthread_db enabled] [New Thread -1228085056 (LWP 14836)] (mergeant:14836): GLib-GObject-WARNING **: invalid (NULL) pointer instance (mergeant:14836): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed (mergeant:14836): GLib-GObject-WARNING **: invalid (NULL) pointer instance (mergeant:14836): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed [New Thread -1239270496 (LWP 14839)] [Thread -1239270496 (zombie) exited] Program exited normally. (gdb) run Starting program: /usr/bin/mergeant Failed to read a valid object file image from memory. [Thread debugging using libthread_db enabled] [New Thread -1228822336 (LWP 14840)] (mergeant:14840): GLib-GObject-WARNING **: invalid (NULL) pointer instance (mergeant:14840): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed (mergeant:14840): GLib-GObject-WARNING **: invalid (NULL) pointer instance (mergeant:14840): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed [New Thread -1240007776 (LWP 14841)] Program received signal SIGSEGV, Segmentation fault. [Switching to Thread -1228822336 (LWP 14840)] 0xb6e0cab4 in g_object_remove_weak_pointer () from /usr/lib/libgobject-2.0.so.0 (gdb) bt #0 0xb6e0cab4 in g_object_remove_weak_pointer () from /usr/lib/libgobject-2.0.so.0 #1 0xb71c934b in gdk_x11_gc_get_xdisplay () from /usr/lib/libgdk-x11-2.0.so.0 #2 0xb71c94e7 in gdk_x11_gc_get_xdisplay () from /usr/lib/libgdk-x11-2.0.so.0 #3 0xb71c612a in gdk_events_pending () from /usr/lib/libgdk-x11-2.0.so.0 #4 0xb71c6827 in gdk_events_pending () from /usr/lib/libgdk-x11-2.0.so.0 #5 0xb71c6bef in gdk_add_client_message_filter () from /usr/lib/libgdk-x11-2.0.so.0 #6 0xb6d92c71 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0 #7 0xb6d95cff in g_main_context_check () from /usr/lib/libglib-2.0.so.0 #8 0xb6d960b7 in g_main_loop_run () from /usr/lib/libglib-2.0.so.0 #9 0xb744cb51 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0 #10 0xb7ea8f61 in gnome_db_main_run ( init_func=0x8065bf1 , user_data=0x0) at gnome-db-init.c:126 #11 0x08052b6b in main (argc=1, argv=0xbf942e44) at main.c:123