Not able to visualize or record point cloud using openni_viewer

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I am not able to visualize the point cloud data using the openni_viewer and further not able to capture .pcd image. There is no error message anywhere. Although, point cloud stream is getting displayed using rviz. I am using kinect sensor. I am using pcl17 library. And trying to view Point cloud live stream using the inbuilt binary called ./pcl_openni_viewer and to capture/record i am using the ./pcl_openni_pcd_recorder . Any possible suggestion, what am i missing ?