Looks like you ran the nmap scan with fast track, but fast track uses sqlite3. I might advise to use db_connect, as if you notice, fast track still uses db_create. Also of course use postgres or mysql. More stable. Use db_nmap to get your scan results into your database. Thats all I've got... rest might be up to the dev team. I've got a pretty decent metasploit tutorial I've done that you may want to check out in addition to metasploit unleashed.