I'm using PostgreSQL 9.2 on Windows.

I created a small database with four tables and one function. I set up default privileges for a group role on the public schema. All seems to be working except when I try and backup the database. I receive this error:

Code:
pg_dump: unknown object type (84) in default privileges
Here is the SQL that pgAdmin III generates when I select the public schema:

Code:
CREATE SCHEMA public
  AUTHORIZATION postgres;

GRANT ALL ON SCHEMA public TO postgres;
GRANT ALL ON SCHEMA public TO public;
GRANT USAGE ON SCHEMA public TO my_group;
COMMENT ON SCHEMA public
  IS 'standard public schema';

ALTER DEFAULT PRIVILEGES IN SCHEMA public
    GRANT INSERT, SELECT, UPDATE, DELETE, TRUNCATE, REFERENCES, TRIGGER ON TABLES
    TO my_group;

ALTER DEFAULT PRIVILEGES IN SCHEMA public
    GRANT SELECT, UPDATE, USAGE ON SEQUENCES
    TO my_group;

ALTER DEFAULT PRIVILEGES IN SCHEMA public
    GRANT EXECUTE ON FUNCTIONS
    TO my_group;

ALTER DEFAULT PRIVILEGES IN SCHEMA public
    GRANT USAGE ON TYPES
    TO my_group;
Anyone know why this is happening?