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roslaunch error

*Hi , I am trying to run roslaunch ros2opencv uvc_cam.launch , it gives me the following error :

`... logging to /home/nyan/.ros/log/1d192da2-d1ca-11e3-8a0d-b870f417ccf2/roslaunch-nyan-Ideapad-Z460-8001.log Checking log directory for disk usage. This may take awhile. Press Ctrl-C to interrupt Done checking log file disk usage. Usage is <1GB.

started roslaunch server nyan-Ideapad-Z460:45076

Summary

PARAMETERS * /rosdistro * /rosversion * /uvc_cam_node/device * /uvc_cam_node/exposure * /uvc_cam_node/frame_rate * /uvc_cam_node/height * /uvc_cam_node/width

NODES / uvc_cam_node (uvc_cam/uvc_cam_node)

ROS_MASTER_URI=localhost:11311

core service [/rosout] found ERROR: cannot launch node of type [uvc_cam/uvc_cam_node]: uvc_cam ROS path [0]=/opt/ros/hydro/share/ros ROS path [1]=/opt/ros/hydro/share ROS path [2]=/opt/ros/hydro/stacks No processes to monitor shutting down processing monitor... ... shutting down processing monitor complete `

Can anyone help me troubleshoot this error? I am a beginner in ros , and thus I will appreciate simple explanations. Thanks in advance.*

roslaunch error

*Hi , I am trying to run roslaunch ros2opencv uvc_cam.launch , it gives me the following error :

`...

... logging to /home/nyan/.ros/log/1d192da2-d1ca-11e3-8a0d-b870f417ccf2/roslaunch-nyan-Ideapad-Z460-8001.log
Checking log directory for disk usage. This may take awhile.
Press Ctrl-C to interrupt
Done checking log file disk usage. Usage is <1GB.

<1GB.

started roslaunch server nyan-Ideapad-Z460:45076

nyan-Ideapad-Z460:45076 Summary

Summary

PARAMETERS * /rosdistro * /rosversion * /uvc_cam_node/device * /uvc_cam_node/exposure * /uvc_cam_node/frame_rate * /uvc_cam_node/height * /uvc_cam_node/width

/uvc_cam_node/width

NODES / uvc_cam_node (uvc_cam/uvc_cam_node)

(uvc_cam/uvc_cam_node) ROS_MASTER_URI=localhost:11311

ROS_MASTER_URI=localhost:11311

core service [/rosout] found ERROR: cannot launch node of type [uvc_cam/uvc_cam_node]: uvc_cam ROS path [0]=/opt/ros/hydro/share/ros ROS path [1]=/opt/ros/hydro/share ROS path [2]=/opt/ros/hydro/stacks No processes to monitor shutting down processing monitor... ... shutting down processing monitor complete `

Can anyone help me troubleshoot this error? I am a beginner in ros , and thus I will appreciate simple explanations. Thanks in advance.*