Thank you Jack, Tully I'll try to debug the code with gdb (or maybe ddd) and the nodelet in standalone mode; the parselaserdata routine is a piece of code I've copied from another project, and I've never analyzed the code because in the "node-version" all works fine... Thank you again Augusto -- View this message in context: http://ros-users.122217.n3.nabble.com/debugging-nodelets-tp2370662p2391087.html Sent from the ROS-Users mailing list archive at Nabble.com.