I suspect there is something nasty happening when you re-enter abort_routine. You could add:

my $inAbort;

[download]

at the top of the script and change abort_routine to:

sub abort_routine {
    return if $inAbort;
    
    $inAbort = 1;
    
    debug("+abort_routine");
    debug("abort_routine Array_Index: $Array_Index");

    # DO SOMETHING USEFUL HERE TO CLEAN UP THE PROCESS

    $MW->destroy();
    debug("-abort_routine");
}

[download]

so that abort_routine is not re-entered during the destroy or (probably better) change the button command to initiate a different sub that just performs $MW->destroy ();:

...

        $button = $MW->Button(
            -text    => "Shutdown and close",
            -command => [ \&do_close ] )->pack( -side => 'bottom' );

...

sub abort_routine {
    debug("+abort_routine");
    debug("abort_routine Array_Index: $Array_Index");

    # DO SOMETHING USEFUL HERE TO CLEAN UP THE PROCESS

    debug("-abort_routine");
}


sub do_close {
    $MW->destroy();
}

[download]
DWIM is Perl's answer to Gödel

In reply to Re^3: Getting segfaults when destroying and recreating Tk box by GrandFather
in thread Getting segfaults when destroying and recreating Tk box by skt

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