Problem starting rt 2.1.x after good install

I’ve got a trange problem with getting the 2.1.63,64, and 69 working with
apache 1.3.27. RT2 (2.0.15) works just fine, and has been for a long time,
using a very similar virtual host configuration. I havent tried any other
releases 2.1.x releases. The problem crops up when I try to start apache:

    /etc/init.d/httpd start
    Subroutine handler redefined at /rt3/bin/webmux.pl line 111.
    [Thu Feb  6 09:37:43 2003] [error] Undefined subroutine
    &RT::LoadConfig called at /rt3/bin/webmux.pl line 60. Compilation
    failed in require at (eval 73) line 1.

    Syntax error on line 1322 of /home/http/conf/httpd.conf:
    Undefined subroutine &RT::LoadConfig called at /rt3/bin/webmux.pl
    line 60. Compilation failed in require at (eval 73) line 1.

    /rhome/http/bin/apachectl start: httpd could not be started
    httpd started

Here is the relevant virtual hosts section of the apache conf:

<VirtualHost 172.16.0.144:80>
ServerAdmin rtadmin@arraycomm.com
ServerAlias rt3.arraycomm.com rt3
DocumentRoot /rt3/share/html
ServerName rt3.arraycomm.com
Options FollowSymLinks SymLinksIfOwnerMatch ExecCGI
AddDefaultCharset UTF-8
PerlModule Apache::DBI
PerlRequire /rt3/bin/webmux.pl
<FilesMatch “.html$”>
SetHandler perl-script
PerlHandler RT::Mason

<LocationMatch “/Attachment/”>
SetHandler perl-script
PerlHandler RT::Mason

ErrorLog logs/rt3-error.log
TransferLog logs/rt3-access.log

If I simply execute the webmux.pl script from the command line as the user
Apache runs as, it doesn’t return any errors.

Any ideas?

Tim