You must be really new to perl. SCRIPT in this case is a filehandle, not a scalar or array. You should be able to do something like 
open SCRIPT, "otherScript.pl |" or die "script failed: $!";
while (<SCRIPT>) {
  $resultsBox->insert('end', $_);
}
close SCRIPT;

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In reply to Re^3: Calling another script from Perl/Tk by Illuminatus
in thread Calling another script from Perl/Tk by ravishi

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