I keep getting this error in my log, but it doesn't actully cause any issues as the program runs. I am taking it as some sort of random warning instead of as an error, but to be on the safe side, what does this really mean and how can I fix the following issue?

Far as I know... this comes from the threading.py module instead of my code...

Code:
Unhandled exception in thread started by <bound method Future.__bootstrap of <Future(GUI_Task, initi
al daemon)>>
Traceback (most recent call last):
  File "C:\Panda3D-1.7.2\python\lib\threading.py", line 497, in __bootstrap
>     self.__bootstrap_inner()
  File "C:\Panda3D-1.7.2\python\lib\threading.py", line 570, in __bootstrap_inner
    self.__stop()
  File "C:\Panda3D-1.7.2\python\lib\threading.py", line 582, in __stop
    self.__block.release()

Just in case it is comming from my thread... here's the code I am using for that also:
Code:
###############################################################################
class Future(threading.Thread):
    #------------------------------------------------------------------------------
    def __init__(self, func, param, name):
        threading.Thread.__init__(self)
        self.daemon = True
        self.Error = ''
        self.Finish = 0
        self.Func = func
        self.Param = param
        self.StartTime = 0
        self.FinishTime = 0
        self.threadname = name


    #------------------------------------------------------------------------------
    # Runs the program.
    def run(self):
        self.StartTime = globalClock()
        try:
            self.Var = self.Func(*self.Param)

        # On systemexit, we don't need to show it, so we just say there was a call to exit.
        except SystemExit:
            self.Error = 1

        # If it's not a systemexit, then we show the error and say there was an error.
        except:
            from traceback import print_exc
            print self.threadname, print_exc()
            self.Error = 1

        self.FinishTime = globalClock()
        self.Finish = 1