postfix 3.3.0 has fatal error "bad string length 0 < 1"

I'm migrating my mail server from an older instance of postfix (3.2.0) to 3.3.0 on Ubuntu. I'm installing from apt and installation went fine. I'm in the process of trying to set up my MySQL connections, copying them from my old system to this one.

I'm running into a problem when I try to run postmap -q [email protected] mysql:aliases.cf. The error I get is:

postmap: fatal: bad string length 0 < 1: aliases.cf_dbname =

The file in question (aliases.cf) is simple:

hosts = 127.0.0.1
user = postfix_user
password = hunter2
dbname = postfix_db

query = SELECT `destination`
        FROM `mail_aliases`
        WHERE
        `alias_address` = '%u'
        AND `domain` = '%d'
        AND `active` = 1

I've done a couple of things to troubleshoot this:

• I've tried adding options_file and options_group which didn't help.
• Kept options_file and options_group and removed hosts, user, and `password. Didn't work
• Created a hash file (flat file) and that works
• Sent an email to an address in the database (via sendmail on the local box) but get this error: Sep 17 01:06:42 ec21234 postfix/cleanup[4230]: warning: mysql:/etc/postfix/virtual/aliases.cf lookup error for "[email protected]"
• Connecting to the database directly with username and password works perfectly.

I've done a bit of google searching and haven't been able to find anything useful. The closest I could find was this result which only loads when viewed with Google Cache.