problem with cursur within a scriptfile

Hi everybody

I defined a function returning refcursor.

CREATE FUNCTION cursorname (refcursor, character varying, character
varying) RETURNS refcursor ...
which does a select with username and serachphrase.

If I call

BEGIN;
SELECT cursorname(`test`,`username`,`searchphrase`);
MOVE 10 in test;
FETCH 25 from test;
COMMIT;

inside psql everything works well. If I put this code into a
scriptfile and call it, I get the following errormessage:

cannot handle multiple result groups

Why? What does this mean?

I use a webserver which has 'one' persistent connection to the
database. Executing the script the connection breaks. Trying to do a
rollback the database returns that there is no transaction in
progress.

Any help is welcome

Regards
Conni