Problems with refint.so and 6.5 Beta

Hi,

i just installed the 6.5 Beta (on a fresh Suse 6.0 System) and it works
fine, but i don't get refint.so (from the contrib/spi-Diretory of
6.5-tar-gz) working with it. Running the refint.example, Postgres shows me:

ERROR: check_primary_key: even number of arguments shoud be specified

fort all the inserts : "INSERT INTO B VALUES (1)" thru the last "INSERT INTO
C VALUES (30)"

Can somebody help me ?

Michael Scheuner