8.45.1 on mac - Plist problems - Mailing list pgsql-general

Hi all,
   Using a MacBook Pro.  Snow Leopard installed along with XCode

   I have 8.4.1 compiled from tar.gz.  It lives in
/usr/local/postgresql-8.4.1 which is owned by root.  the data
subdirectory is owned by postgres.  A link exists from
/usr/local/postgres to postgresql-8.4.1.

   PGDATA is /usr/local/postgres/data

   I can run okay with /usr/local/postgres/bin/postmaster -D ${PGDATA}

   I have tried to copy/build/modify a plist to start up automatically.
  The file below is named org.postgres.launchd.plist and it is in
/Library/LaunchDaemons.  I have fashioned it after dBEnterprises'.

file:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN"
         "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
     <key>Disabled</key>
       <false/>
     <key>Label</key>
     <string>org.postgres.launchd</string>
     <key>ProgramArguments</key>
       <array>
         <string>/usr/local/postgres-8.4.1/bin/postmaster</string>
         <string>-D</string>
    <string>/usr/local/postgresql-8.4.1/bin</string>
       </array>
     <key>RunAtLoad</key>
       <true/>
     <key>UserName</key>
     <string>postgres</string>
</dict>
</plist>

after saving, I
   launchctl load /Library/LaunchDarmons/org.postgres.launchd.plist
then
   launchctl list | grep postgres returns
      2   org.postgres.launchd

but when I
   launchctl start org.postgres.launchd
Nothing happens.  ps ax |grep postmaster does not show
postmaster running.

Any ideas or assistance is greatfully appreciated.

Bob