psybnc ?

When loading up APF (Advanced Policy Firewall) I get this error.

/etc/apf/conf.apf: line 422: psybnc: command not found

What is psybnc and is it needed?
Thats the thing. I updated to current.
The only thing I didn't do was remove the directories.
I was told to just reinstall and it will update completely..
I'm wondering if not removing the old directories caused a corrupt installation.