Forum OpenACS Development: Create Attribut content type

I have been working on this for a while and have tried a number of things none seem to work, couls anyone be kind enough to help on this please. The error is psql:wp-slim-create10.sql:467: ERROR: -20000: Content type cr_wp_presentations_audience does not exist in content_type.create_attribute The Code is:

create function inline_4 ()
returns integer as'
declare
  attr_id acs_attributes.attribute_id%TYPE;

begin
  attr_id := content_type__create_attribute (
    ''cr_wp_presentation_audience'',
    ''presentation_id'',
    ''integer'',
    ''Prsentation ID'',
    ''Presentation IDs'',
    null,
    null,
    ''integer''
  );

  attr_id := content_type__create_attribute (
    ''cr_wp_presentation_background'',
    ''presentation_id'',
    ''integer'',
    ''Prsentation ID'',
    ''Presentation IDs'',
    null,
    null,
    ''integer''
  );

  attr_id := content_type__create_attribute (
    ''cr_wp_slide_preamble'',
    ''slide_id'',
    ''integer'',
    ''Slide ID'',
    ''Slide IDs'',
    null,
    null,
    ''integer''
  );

  attr_id := content_type__create_attribute (
    ''cr_wp_slide_postamble'',
    ''slide_id'',
    ''integer'',
    ''Slide ID'',
    ''Slide IDs'',
    null,
    null,
    ''integer''
  );

  attr_id := content_type__create_attribute (
    ''cr_wp_slide_bullet_items'',
    ''slide_id'',
    ''integer'',
    ''Slide ID'',
    ''Slide IDs'',
    null,
    null,
    ''integer''
  );
return 0;
end;' language 'plpgsql';

select inline_4 ();
drop function inline_4 ();