prpy logger issue

[shenlirobot]

When I tried to plan a path for Ada, it always come up with this error message.
By the way, I added this to the beginning of robot.py in prpy so that I can see more debugging messages.

logger = logging.getLogger(__name__)
logger.setLevel(logging.DEBUG)

This is the error message: (see "TypeError: not enough arguments for format string" in the end)

[INFO] [prpy.planning.base:base.py:297]:plan: Sequence - Calling planner "CBiRRT".
[GeneralIK.cpp:58 Init] Initializing GeneralIK Solver
[cbirrtproblem.cpp:112 main] IKsolver initialized
[cbirrtproblem.cpp:771 RunCBirrt] Doing Goal sampling
[cbirrtproblem.cpp:771 RunCBirrt] Doing Goal sampling
[cbirrtproblem.cpp:771 RunCBirrt] Doing Goal sampling
[cbirrtproblem.cpp:771 RunCBirrt] Doing Goal sampling
[cbirrtproblem.cpp:843 RunCBirrt] Setting default init config to current config
[GeneralIK.cpp:58 Init] Initializing GeneralIK Solver
[GeneralIK.cpp:58 Init] Initializing GeneralIK Solver
[GeneralIK.cpp:58 Init] Initializing GeneralIK Solver
[GeneralIK.cpp:58 Init] Initializing GeneralIK Solver
[cbirrt.cpp:260 InitPlan] numdofs: 6
[cbirrt.cpp:305 InitPlan] grabbed: 0
[GeneralIK.cpp:58 Init] Initializing GeneralIK Solver
[cbirrt.cpp:314 InitPlan] Psample: 0.100000
[cbirrt.cpp:392 InitPlan] Checking for start projection...
[cbirrt.cpp:427 InitPlan] Start Node(s) Created
[cbirrt.cpp:860 AddRootConfiguration] Attached Solver Found a Solution!
[cbirrt.cpp:946 AddRootConfiguration] Constrained IK solution(s) found!
[cbirrt.cpp:622 PlanPath] Got first goal ik solution!
[cbirrt.cpp:746 PlanPath] Planning time: 0.063029s
[cbirrt.cpp:1183 _OptimizePath] Smoothing...
[cbirrt.cpp:1240 _OptimizePath] Done
[INFO] [prpy.planning.base:base.py:306]:plan: Sequence - Planning succeeded after 0.272 seconds with "CBiRRT".
[INFO] [prpy.base.robot:robot.py:400]:do_execute: Post-processing path with 142 waypoints.
[DEBUG] [prpy.base.robot:robot.py:275]:PostProcessPath: Detected "constrained" tag on trajectory: Setting constrained = True.
[DEBUG] [prpy.base.robot:robot.py:280]:PostProcessPath: Detected "smooth" tag on trajectory: Setting smooth = True
[DEBUG] [prpy.base.robot:robot.py:317]:do_postprocess: Setting robot "ADA" DOFs [2, 3, 4, 5, 6, 7] (affine? 0) as active for post-processing.
[DEBUG] [prpy.base.robot:robot.py:347]:do_postprocess: Shortcutting an unconstrained path.
[DEBUG] [prpy.base.robot:robot.py:355]:do_postprocess: Smoothing an unconstrained path.
[INFO] [prpy.planning.base:base.py:297]:plan: Sequence - Calling planner "ParabolicSmoother".
[INFO] [prpy.planning.base:base.py:306]:plan: Sequence - Planning succeeded after 0.301 seconds with "ParabolicSmoother".
[INFO] [prpy.base.robot:robot.py:410]:do_execute: Post-processing took 2.104 seconds and produced a path with 11 waypoints and a duration of 5.699 seconds.
Traceback (most recent call last):
  File "/usr/lib/python2.7/logging/__init__.py", line 851, in emit
    msg = self.format(record)
  File "/usr/lib/python2.7/logging/__init__.py", line 724, in format
    return fmt.format(record)
  File "/home/shenli/storage/ada/src/prpy/src/prpy/logger.py", line 48, in format
    message = self._default_formatter.format(record)
  File "/usr/lib/python2.7/logging/__init__.py", line 464, in format
    record.message = record.getMessage()
  File "/usr/lib/python2.7/logging/__init__.py", line 328, in getMessage
    msg = msg % self.args
TypeError: not enough arguments for format string
Logged from file util.py, line 80