Problems with timestamp.

Hi.
I've been using PostgreSQL 7.1.3 for a year without
problems.
Last week I installed a new server with Red Hat 7.2
and PostgreSQL 7.2.1
I've copied my database by using "pg_dumpall" from my
old server to the new one.
But now the following query doesn't work:

SELECT date_part('year', fechaacta) AS "Ao de
donacin", sexo AS "Sexo", count(*) AS "Cantidad de
donantes" FROM "Capital" WHERE date_part('year',
age(timestamp(fechanacimiento))) BETWEEN 1 AND 100
AND "fecha" BETWEEN '2001/01/01' AND '2002/12/31'
GROUP BY date_part('year', fechaacta), sexo

the answer from server was:

Warning: PostgreSQL query failed: ERROR: parser:
parse error at or near "fechanacimiento" in
/var/www/html/ActasPcias/consultas.php on line 471

note: I've taken a care that "fechanacimiento" was a
field of table "Capital".

Exactly the same query in exactly the same database
works perfectly on my old server

Can anybody tell me what's going on ?

Thanks.

Juan Pablo

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