iTunes. NV+ V2 4bay's

Months ago when I first enabled the iTunes server, the file /var/log/mt-daapd.log showed:

2013-03-02 19:31:27 (4035a000): Firefly Version svn-1676: Starting with debuglevel 2
2013-03-02 19:31:27 (4035a000): Plugin loaded: daap/svn-1676
2013-03-02 19:31:27 (4035a000): Plugin loaded: rsp/svn-1676
2013-03-02 19:31:27 (4035a000): Plugin loaded: ssc-script/svn-1676
2013-03-02 19:31:27 (4035a000): Starting rendezvous daemon
2013-03-02 19:31:27 (4035a000): Starting signal handler
2013-03-02 19:31:27 (4035a000): Initializing database
2013-03-02 19:31:27 (4035a000): Starting web server from /usr/share/mt-daapd/admin-root on port 3689
2013-03-02 19:31:27 (4035a000): Registering rendezvous names
2013-03-02 19:31:27 (4035a000): Serving 19 songs.  Startup complete in 0 seconds

Logging stopped back in June - but I don't exactly know why. It is possible that's when 5.3.8 installed?

2013-06-23 19:10:20 (4035a000): Scanned 25 songs (was 0) in 1 seconds
2013-06-23 19:22:49 (4035a000): Got shutdown signal.
2013-06-23 19:22:49 (4035a000): Stopping gracefully
2013-06-23 19:22:49 (4035a000): Stopping rendezvous daemon
2013-06-23 19:22:49 (4035a000): Closing database
2013-06-23 19:22:49 (4035a000): Done!

but now I get this error (same as Jason):

2013-10-30 01:25:35 (4035a000): Firefly Version svn-1676: Starting with debuglevel 2
2013-10-30 01:25:35 (4035a000): Plugin loaded: daap/svn-1676
2013-10-30 01:25:35 (4035a000): Plugin loaded: rsp/svn-1676
2013-10-30 01:25:35 (4035a000): Plugin loaded: ssc-script/svn-1676
2013-10-30 01:25:35 (4035a000): Starting rendezvous daemon
2013-10-30 01:25:35 (4035a000): Starting signal handler
2013-10-30 01:25:35 (4035a000): Error opening db: No backend database support for type: sqlite

How did the db type change?

Is it safe to simply change the db type to sqlite3, or best to do an OS reinstall (bit dramatic?)?