Do you have a specific problem? I have a somewhat similar configuration.
One thing that messed me up with sauserprefs on FreeBSD was the location of the config files. I thought they were in /usr/local/etc/mail/spamassassin, but they ended up being in /usr/local/share/spamassassin
If it's something else, email me as I mostly only check the forums here during RoundCube updates.
Address: rfassett at anent dot net