Hello, I am running Ubuntu 10.04 64-bit, and using the apt repositories for ROS software, except for the NXT stacks. When I run rviz, the loading window comes up, and then it closes. On the terminal, I get this output: $ rosrun rviz rviz [ INFO] [1284939757.183942571]: Loading general config from [/home/max/.rviz/config] [ INFO] [1284939757.184449110]: Loading display config from [/home/max/.rviz/display_config] rviz: /usr/include/boost/smart_ptr/shared_ptr.hpp:418: T* boost::shared_ptr< >::operator->() const [with T = rviz::DisplayTypeInfo]: Assertion `px != 0' failed. /opt/ros/cturtle/ros/bin/rosrun: line 35: 12834 Aborted $exepath "$@" What is going wrong here? From, Max