Thread error

[Salvatore Di Fazio]

Hi Dennis,
I have another little problem with your source:

Traceback (most recent call last):
  File "main.py", line 86, in <module>
    kdi.join()  # wait for kdi thread to exit NO CPU HOG BUSY LOOPS
  File "d:\programmi\python25\lib\threading.py", line 549, in join
    assert self.__started, "cannot join thread before it is started"
AssertionError: cannot join thread before it is started

I don't know what this means.
Now I try some experiment.
Tnx