From my experience, in 1.6.0.0-rc1 bibs loading fails because trigger
zzz_update_materialized_simple_record_tgr" for table "real_full_rec"
does not exist (is no longer created).
The parallel_pg_loader.pl and pg_loader.pl include statement
SELECT reporter.disable_materialized_simple_record_trigger();
in their output sql files for bibs loading which causes execution of
DROP TRIGGER zzz_update_materialized_simple_record_tgr ON
metabib.real_full_rec;
and the loading failure.
Wiktor Rzeczkowski
Mcmaster University