sql-ledger requires some specific changes to your Apache config files in order
to work

Please add the following directives to your virtual host config
(usually /etc/apache2/conf/vhost/vhosts.conf )

Either simply add:

 <Directory ${MY_INSTALLDIR}>
   AllowOverride All
 </Directory>

Which will use the .htaccess files.  Or for those who prefer to avoid
that tiny bit of overhead while Apache checks for .htaccess files use:
 
 <Directory ${MY_INSTALLDIR}>
   AddHandler cgi-script .pl
   Options ExecCGI Includes FollowSymlinks
   Order Allow,Deny
   Allow from All
 </Directory>
 
 <Directory ${MY_INSTALLDIR}/users>
   Order Deny,Allow
   Deny from All
 </Directory>

Please then double check that you can't directly access the files via a
webbrowser in the /users directory

    
NOTE: also that you need to create/edit sql-ledger.conf; the prototype
can be found at ${MY_INSTALLDIR}/sql-ledger.conf.default
    
Necessary Postgres setup:

 su postgres -c 'createuser -d -a sql-ledger'
 su postgres -c 'createlang plpgsql template1'

From here, you need to load <whatever>/sql-ledger/admin.pl . Follow
the instructions at http://www.sql-ledger.com/cgi-bin/nav.pl?page=source/readme.txt&title=README