Problem with Apache::Authen::Program V 0.92 under WinXP

(1) I've patch the source slightly:
--- Program.pm  Sat Mar 29 14:32:24 2003
+++ /perl/site/lib/Apache/Authen/Program.pm     Sat Mar 29 14:43:10
2003
@@ -11,5 +11,5 @@

 use strict;
-use Apache::Constants ':common';
+use Apache::Constants qw(SERVER_ERROR AUTH_REQUIRED OK);
 use File::Temp q(tempfile);

(2) Some other time I'll use these new constants:
http://perl.apache.org/docs/2.0/user/compat/compat.html#Deprecated_Con
stants

(3) startup.pl:
use Apache2 ();
use ModPerl::Util ();
use Apache::RequestRec ();
use Apache::RequestIO ();
use Apache::RequestUtil ();
use Apache::Server ();
use Apache::ServerUtil ();
use Apache::Connection ();
use Apache::Log ();
use Apache::Const -compile => ':common';
use APR::Const -compile => ':common';
use APR::Table ();
use Apache::compat ();
use ModPerl::Registry ();
use CGI ();
#use DBI ();
#use DBD::mysql ();

1;

(4) httpd.conf:
<Directory "C:/Apache2/sweep">
        AuthName "SWEEP Authentication"
        AuthType Basic
        PerlSerVar AuthenProgram "/usr/bin/perl /Apache2/authen/authen.pl"
        PerlSetVar AuthenProgramSuccess Ok
        PerlSetVar AuthenProgramPassword File
        PerlAuthenHandler Apache::Authen::Program
        require valid-user
</Directory>

(5) What happens is that Apache does not start. It stops within 1
second. There is nothing in error.log.

(6) If I comment out 1 line in httpd.conf:
#       PerlSerVar AuthenProgram "/usr/bin/perl /Apache2/authen/authen.pl"
Apache starts.

(7) I've also tried:
        PerlSerVar AuthenProgram "/Apache2/authen/authen.bat"
and
        PerlSerVar AuthenProgram /Apache2/authen/authen.bat
in case quotes or a single token (no spaces) made any difference, but
no. authen.bat is just:
perl /Apache2/authen/authen.pl

--
Cheers
Ron Savage, ron@xxxxxxxxxxxxx on 29/03/2003
http://savage.net.au/index.html