What can be wrong if I get the following error upon camera calibration?
$ rosrun camera_calibration cameracalibrator.py --size 4x6 --square 0.024 --approximate=0.1 --camera_name=stereo_frame right:=/right/image_raw left:=/left/image_raw right_camera:=/right left_camera:=/left
: (after seemingly successful calibration process)
Unable to set camera info for calibration. Failure message: failed to write to a file.
`/tmp/calibrationdata.tar.gz` is generated with .png files in it.
On the terminal where stereo camera node is launched, this error prints when I clicked on `COMMIT` button on the calibration GUI.
[ERROR] Unable to open camera calibration file [/home/rospasta/.ros/camera_info/left.yaml] for writing
[ERROR] Unable to open camera calibration file [/home/rospasta/.ros/camera_info/right.yaml] for writing
rosversion
1.11.10
dpkg -p ros-hydro-camera-calibration | grep Ver
1.11.10-0precise-20150101-0623-+0000
Btw I'm running `roslaunch nextage_ros_bridge nextage_ueye_stereo.launch` ([source](https://github.com/tork-a/rtmros_nextage/blob/69ae0af97c4eace9b6ed1d2af263c4317684daf6/nextage_ros_bridge/launch/nextage_ueye_stereo.launch)) that runs [ueye_cam](http://wiki.ros.org/ueye_cam).
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