Thank you for your reply. I have tried reinstalling the stable version a couple of times and then the latest nightly version with sqlite3, none of which worked.
I then installed sqlite and Firefly-svn-1372. That did the trick. Bringing up my firewall made the whole system collapse again until I punched a hole in it for 5353/udp (next to 3689/udp and 3689/tcp).
At the moment I’m trying to figure out how to make the daemon start automatically when the server reboots.