Make sure the following lines are not repeated in your 90adjustTransProxy
if (defined $squid{BypassProxyFrom})
 {
  my $bypassproxyfrom = $squid{BypassProxyFrom};
  foreach my $bypasssource (split(',', $bypassproxyfrom))
  {
  $OUT .= " /sbin/iptables --table nat --append $pf_chain\\\n";
  $OUT .= "                --source $bypasssource --jump RETURN\n";
  }
 }
If repeated, just comment them out!