ros libuvc_camera stopped working

edit

I am using the rosrun on Nvidia Ubuntu 14.04 platform and i have USB Camera ( UVC Complaint ), i ran the following,

roscore rosrun libuvc_camera camera_node

It worked fine, then i started installing the other components like kinect, stereo camera drivers ( some more components )

after that it stopped working,

root@tegra-ubuntu:/home/ubuntu# rosrun --debug libuvc_camera camera_node

[rosrun] Looking in catkin libexec dirs: /opt/ros/indigo/lib/libuvc_camera

[rosrun] Looking in rospack dir: /opt/ros/indigo/share/libuvc_camera

[rosrun] Searching for camera_node with permissions /111

[rosrun] Running /opt/ros/indigo/lib/libuvc_camera/camera_node

uvc_start_iso_streaming: Busy (-6)

before running this command, i have two video nodes video0 & video1 and i could able to see both videos using luvcview.

After i ran this command, i got only the video0 only ( also it seems that earlier video1 node becomes video0 )

Please share your inputs