[PgSQL 7.4.1] Problem with subquery

Hi,

Yesterday i had upgrade my PostgreSQL server from version 7.2.4
to 7.4.1.

There are troubles with a subquery after the upgrade.

Here is the query:

SELECT team_naam, team_id, wpim, (
    SELECT count(thuis_uitslag)
        FROM wedstrijden
        WHERE (thuis_wed = t.team_id
            OR uit_wed = t.team_id)
            AND seizoen_id = 3 AND klasse_id = 1)
        AS wd, (
    SELECT count(t.team_id)
        FROM wedstrijden w
        WHERE (thuis_wed = t.team_id AND thuis_uitslag >
            uit_uitslag OR uit_wed = t.team_id
            AND thuis_uitslag < uit_uitslag)
            AND seizoen_id = 3
            AND klasse_id = 1 )
        AS gw
FROM teams t
WHERE seizoen_id = 3 AND klasse_id = 1
GROUP BY t.team_naam, t.team_id, t.team_id, t.wpim

The SQL server returns:
-----------------------
SQL error:
ERROR:  more than one row returned by a subquery used as an expression

This query works perfectly in PgSQL v7.2.4, but not in 7.4.1
Does anybody know what's wrong here?

--
Edwin Pauli