What is the actual error message as produced by perl? The one listed in your post isn't.

What do you get with 

use Data::Dump qw/ dd /;
dd( $prn );

[download]

get_unique_spool makes use of a tainted $ENV{TEMP}

In reply to Re^2: Taint error in Printer module by Anonymous Monk
in thread Taint error in Printer module by ksublondie

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