I have tried this approach, but I still got the error (in a couple of different incarnations). If you ran yours, I wonder if maybe you didn't run it for long enough, because, based on what is written above, it is still unsafe due to asynchronous accesses.

In reply to Re: Re: Tk::Progressbar gives X Error by gri6507
in thread Tk::Progressbar gives X Error by gri6507

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