can't subscribe /camera/rgb/image

edit

Hey,every one:

I have use openni.launch with my Kinect v1.My system is ubuntu 14.04, ROS vison is indigo. Everything used to be fine.But recently, when I subscrive the topic /camera/rgb/image_color or other image topic at /camera/rgb ,it shows error like this:

[camera/camera_nodelet_manager-2] process has died [pid 23711, exit code -11, cmd /opt/ros/indigo/lib/nodelet/nodelet manager __name:=camera_nodelet_manager __log:=/home/exbot/.ros/log/1b4832c4-0090-11e6-ac46-000babaa3dc8/camera-camera_nodelet_manager-2.log].

log file: /home/exbot/.ros/log/1b4832c4-0090-11e6-ac46-000babaa3dc8/camera-camera_nodelet_manager-2*.log

Meanwhile I can subscribe/camera/depth/image_raw fine.

Could anybody handle this?

Thanks a lot!!!