Error in hot.bro

I've been trying to get this worked out but no luck yet. Any suggestions?

bash-3.00# /usr/local/bro/bin/bro -i sis0 mt
policy/hot.bro, line 78: error: unknown identifier is_local_addr, at or nea=

Where is site.bro being loaded from via $BROPATH? That's the module that
defines is_local_addr, and it's loaded by policy/hot.bro, so if you're
getting this message it appears you're not loading the usual one from
policy/site.bro. If you don't see a different site.bro that's being loaded,
then does ls -lut indicate that policy/site.bro is being loaded when you
run Bro?