OK, I must be missing something here.... now it just prints out:

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sub { my $output; if ($ENV{SCRIPT_NAME} =~ /nph-build/) { $output = ''; } else { $output = Links::SiteHTML::display('include_login'); } return $output; }

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I presume that this means that it isn't being parsed as a script and is being presented as HTML instead. And yes, this is using .shtml pages.

Thanks for your patience and help with this