Hi Agusto,<br><br>Based on your backtrace it looks like you have a bug in the parseLaserData method.  &quot;&quot;&quot;/home/usad1/workspace/usad/cart/cart/lib/libusad_nodelet.so(_ZN12usad_nodelet22nodelet_LaserPublisher14parseLaserDataERKSs+0xdbc)[0x46e1ec]&quot;&quot;&quot;<br>

<br>Nodelets are dynamically loaded into the manager and if a nodelet crashes it will take down the manager.  A way to isolate any individual nodelet to make debugging easier is to run it in standalone mode.  You loose the intraprocess communication, but decrease the number of threads to debug.  <br>

<br>Tully<br><br><br><div class="gmail_quote">On Sat, Jan 29, 2011 at 11:05 AM, Augusto Luis Ballardini <span dir="ltr">&lt;<a href="mailto:trigal@gmail.com">trigal@gmail.com</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">

<br>
Hi<br>
<br>
I have 2 nodelets and some troubles with them: the first nodelet is a driver<br>
for a LaserRangeFinder and it publishes the data (intraprocess, I followed<br>
<a href="http://code.google.com/p/utexas-art-ros-pkg/source/browse/trunk/stacks/velodyne/velodyne_common/src/nodelets/driver_nodelet.cc" target="_blank">http://code.google.com/p/utexas-art-ros-pkg/source/browse/trunk/stacks/velodyne/velodyne_common/src/nodelets/driver_nodelet.cc</a><br>


this  excellent code) to the other nodelet, which checks if there is<br>
something close to the referenceframe of the sensor.<br>
All is working fine but sometimes the nodelet manager crashes (there is the<br>
log file attached to this post) at runtime.<br>
<br>
Does anyone could understand something from the log? How can I debug these<br>
nodelets? I&#39;m working on eclipse (make eclipse-project and so on) but I<br>
don&#39;t find how to debug nodes other than classic.<br>
<br>
<a href="http://ros-users.122217.n3.nabble.com/file/n2370662/ROS_LIST.txt" target="_blank">http://ros-users.122217.n3.nabble.com/file/n2370662/ROS_LIST.txt</a><br>
ROS_LIST.txt<br>
<br>
Thank you<br>
Augusto<br>
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</font></blockquote></div><br><br clear="all"><br>-- <br>Tully Foote<br>Systems Engineer<br>Willow Garage, Inc.<br><a href="mailto:tfoote@willowgarage.com">tfoote@willowgarage.com</a><br>(650) 475-2827<br>