Hi, i am using the package bumblebee2, i am able to see the right and left image using rosrun image_view image_view image:=bumblebee2/left/image_color (it works also with image_mono, image_raw and the same for the right image) but when i try to obtain the disparity image (using ROS_NAMESPACE=bumblebeeXB3 rosrun stereo_image_proc stereo_image_proc and rosrun image_view disparity_view image:=bumblebee2/disparity ) i obtain the error &quot;Illegal instruction&quot;. when i use the debugger i obtain this:<br /><br />terminate called after throwing an instance of &#39;image_transport::TransportLoadException&#39;<br />  what():  Unable to load plugin for transport &#39;disparity&#39;, error string:<br />According to the loaded plugin descriptions the class image_transport/disparity_sub with base class type image_transport::SubscriberPlugin does not exist. Declared types are  image_transport/raw_sub<br /><br />Program received signal SIGABRT, Aborted.<br />0xffffe424 in __kernel_vsyscall ()<br /><br /><br /><br /><br />can anybody help me?<br /><br />thanks in advance