Problem creating a function

Hi all

Trying to create a function I get the following:

codex=# CREATE FUNCTION "bitvg" (integer,integer) RETURNS integer AS
'/home/database/pgdata/cobis/bitvg/bitvg.so', 'bitvg' LANGUAGE 'C';
ERROR: could not load library
"/home/database/pgdata/cobis/bitvg/bitvg.so":
/home/database/pgdata/cobis/bitvg/bitvg.so: Kann die
Shared-Object-Datei nicht öffnen: Datei oder Verzeichnis nicht gefunden

in english: /home/database/pgdata/cobis/bitvg/bitvg.so: cannot open
shared object: file not found

The file does exist in the path /home/database/pgdata/cobis/bitvg/:
-rwxr-xr-x 1 root root 133 Jul 19 13:13 bitvg.c
-rwxr-xr-x 1 root root 782 Jul 19 13:13 bitvg.o
-rwxr-xr-x 1 root root 3198 Jul 19 13:13 bitvg.so

What do I miss?

Thank's in advance
Conni
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