View source for Syslog-ng

You can not restart syslog-ng.sh in the local directory on FreeBSD, you need to use the complete path.
 # pwd
 /usr/local/etc/rc.d
 # ./syslog-ng.sh 
 ./syslog-ng.sh: Cannot determine the PREFIX
 # /usr/local/etc/rc.d/syslog-ng.sh 
 Usage: syslog-ng.sh {start|stop}

also in FreeBSD make sure you do not have 
 syslogd_flags="-d"
still set in rc.conf or you'll be stuck in debug mode during [[init]] the next time you reboot. Remove the -d.
 syslogd_program="/usr/local/sbin/syslog-ng"
 syslogd_flags=""
work as of FreeBSD 5.4-RELEASE.