Hi again, I just installed the binaries from the karmic deb packages as well and tried again. Changed the environment variables accordingly to use the binaries and ran another rosmake --pre-clean turtle_tf so it recompiled the tutorial (installed via rosinstall from https://code.ros.org/svn/ros-pkg/branches/trunk_boxturtle/stacks/ros_pkg_tutorials/ and checked again that it is the latest version) Still the same result: [turtle_pointer-6] process has died [pid 13283, exit code -4]. Any ideas? Cheers, Felix On Fri, May 7, 2010 at 10:37 PM, Felix Ruess wrote: > Hi, > > I ran >  rosmake --pre-clean turtle_tf > hence it also did a make clean on tf, but still the same... > > I installed ros after upgrading to lucid and I'm still on 32bit, > unfortunately I can't apt-get upgrade my hardware ;-) > > Felix > > 2010/5/7 Lorenz Mösenlechner : >> Hi, >> >> did you try to recompile tf and all its dependencies? >> rosmake --pre-clean tf >> >> When did you upgrade to lucid? Did you have the ros installation >> before? Did you maybe change from 32 bit to 64 bit or vice versa? >> >> Lorenz >> >>> Dejan, >>> >>> I attached the full backtrace in case this is of any help... >>> Thanks a lot! >>> >>> Cheers, Felix >>> >>> On Fri, May 7, 2010 at 7:49 PM, Felix Ruess wrote: >>> > Tully, >>> > >>> > thanks for the hint! I did a svn up in joystick_drivers and there now >>> > it is already added in the dep file :-) >>> > And yes, that is not the problem causing the segfault. >>> > >>> > Dejan, >>> > >>> > finally found out how to debug the python program with gdb (removed >>> > the node from the launch file and ran gdb python seperately). >>> > here is the trace: >>> > >>> > (gdb) run turtle_tf_listener.py __name:=turtle_listener >>> > Starting program: /usr/bin/python turtle_tf_listener.py __name:=turtle_listener >>> > [Thread debugging using libthread_db enabled] >>> > [New Thread 0x25a8b70 (LWP 7159)] >>> > [New Thread 0x2da9b70 (LWP 7160)] >>> > [New Thread 0x35b6b70 (LWP 7161)] >>> > [Thread 0x35b6b70 (LWP 7161) exited] >>> > [New Thread 0x35b6b70 (LWP 7166)] >>> > [New Thread 0x3db7b70 (LWP 7170)] >>> > [New Thread 0x45b8b70 (LWP 7173)] >>> > [New Thread 0x4db9b70 (LWP 7175)] >>> > [Thread 0x45b8b70 (LWP 7173) exited] >>> > >>> > Program received signal SIGILL, Illegal instruction. >>> > [Switching to Thread 0x4db9b70 (LWP 7175)] >>> > 0x0051c203 in ros::TimeBase::fromSec >>> > (obj=