Tracker crash

[markpatton]

Then user manager crashed and screen saver crashed,

[ERROR] [1389557715.455244075]: TF_NAN_INPUT: Ignoring transform for child_frame_id "/tracker_center/right_hand_1" from authority "/tracker1" because of a nan value in the transform (-nan -nan -nan) (0.500000 0.500002 0.500000 0.499998)
[ERROR] [1389557715.491245591]: TF_NAN_INPUT: Ignoring transform for child_frame_id "/tracker_center/right_hand_1" from authority "/tracker1" because of a nan value in the transform (-nan -nan -nan) (0.500000 0.500002 0.500000 0.499998)
[ERROR] [1389557715.521640845]: TF_NAN_INPUT: Ignoring transform for child_frame_id "/tracker_center/right_hand_1" from authority "/tracker1" because of a nan value in the transform (-nan -nan -nan) (0.500000 0.500002 0.500000 0.499998)
[ERROR] [1389557715.554133708]: TF_NAN_INPUT: Ignoring transform for child_frame_id "/tracker_center/right_hand_1" from authority "/tracker1" because of a nan value in the transform (-nan -nan -nan) (0.500000 0.500002 0.500000 0.499998)
[ERROR] [1389557715.589736948]: TF_NAN_INPUT: Ignoring transform for child_frame_id "/tracker_center/right_hand_1" from authority "/tracker1" because of a nan value in the transform (-nan -nan -nan) (0.500000 0.500002 0.500000 0.499998)
[ERROR] [1389557715.621749724]: TF_NAN_INPUT: Ignoring transform for child_frame_id "/tracker_center/right_hand_1" from authority "/tracker1" because of a nan value in the transform (-nan -nan -nan) (0.500000 0.500002 0.500000 0.499998)
[ERROR] [1389557715.654637392]: TF_NAN_INPUT: Ignoring transform for child_frame_id "/tracker_center/right_hand_1" from authority "/tracker1" because of a nan value in the transform (-nan -nan -nan) (0.500000 0.500002 0.500000 0.499998)
[ERROR] [1389557715.689667352]: TF_NAN_INPUT: Ignoring transform for child_frame_id "/tracker_center/right_hand_1" from authority "/tracker1" because of a nan value in the transform (-nan -nan -nan) (0.500000 0.500002 0.500000 0.499998)
Traceback (most recent call last):
File "/home/msp/jhu-interaction/wallframe/wallframe_user/scripts/wallframe_user_manager.py", line 679, in
m = UserManager()
File "/home/msp/jhu-interaction/wallframe/wallframe_user/scripts/wallframe_user_manager.py", line 501, in init
self.update_user_state()
File "/home/msp/jhu-interaction/wallframe/wallframe_user/scripts/wallframe_user_manager.py", line 544, in update_user_state
user.update_state()
File "/home/msp/jhu-interaction/wallframe/wallframe_user/scripts/wallframe_user_manager.py", line 245, in update_state
self.merge_multiple_trackers()
File "/home/msp/jhu-interaction/wallframe/wallframe_user/scripts/wallframe_user_manager.py", line 171, in merge_multiple_trackers
self.transforms_merged_[index] = self.transforms_[single_tracker_id][index]
IndexError: list index out of range
[wallframe_user_manager-2] process has died [pid 13815, exit code 1].
log files: /home/msp/.ros/log/8235a17a-7bc1-11e3-a5c9-00e081de4653/wallframe_user_manager-2*.log