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 "Illegal instruction". when i use the debugger i obtain this:

terminate called after throwing an instance  
of 'image_transport::TransportLoadException'
what(): Unable to load plugin for transport 'disparity', error string:
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

Program received signal SIGABRT, Aborted.
0xffffe424 in __kernel_vsyscall ()




can anybody help me?

thanks in advance