A few points. Are you sure that slide_name is being passed? You may want to save the mogrify command output to a variable and look at what is returns. 
my $ret = `/usr/bin/mogrify -flip $slide_name`;
print "\n" . $ret . "\n";

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In reply to Re: mogrify not working by onelander
in thread mogrify not working by rbhyland

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