How to fix the motion_planning_rviz_plugin on Fuerte?

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Hi All,

I really want to make rviz subscribe to arm_navigation_msgs::DisplayTrajectory and there is already a plugin for that:motion_planning_rviz_plugin in arm_navigation stack. Thanks!

However, there is a typo (an extra 'g') for the class field of class entry in its plugin_description.xml triggering the following error msg when adding Planning Display.

[ERROR] [1337924692.343620701]: The plugin for class 'motiong_planning_rviz_plugin/Planning' failed to load.  Error: Failed to load library /opt/ros/fuerte/stacks/arm_navigation/motion_planning_rviz_plugin/lib/libmotion_planning_rviz_plugin.so. Make sure that you are calling the PLUGINLIB_REGISTER_CLASS macro in the library code, and that names are consistent between this macro and your XML. Error string: Cannot load library: No manifest in /opt/ros/fuerte/stacks/arm_navigation/motion_planning_rviz_plugin/lib/libmotion_planning_rviz_plugin.so: motiong_planning_rviz_plugin__Planning

Based on what I understand from this tutorial, I naively corrected the name field of class entry in plugin_description.xml under /opt/ros/fuerte/stacks/arm_navigation/motion_planning_rviz_plugin. But, I got a segfault when adding Planning Display (Rviz suddenly quit, badly with an _empty_ rviz-*.log).

Still, have no idea why that trivial correction for a seemingly trivial typo in the .xml leads to a segfault.

Do I overlook something?

Thank you.

PS: This is related to this question and this ticket. Apologize for somewhat reposting.