Permission denied in file_fdw (Windows)

Hi

I'm getting an error when reading from a file_fdw table in a Windows
environment.
Any hints? (see below).

And http://www.postgresql.org/docs/9.1/static/file-fdw.html is not
really verbose :->
At least following format options should be mentioned: 'xml', 'text',
'csv', 'binary'.

Yours, Stefan

That's what I'm doing:

CREATE EXTENSION file_fdw;

CREATE SERVER file_server FOREIGN DATA WRAPPER file_fdw;

CREATE FOREIGN TABLE foreignfiletable(id text, title text)
SERVER file_server
OPTIONS(format 'csv', header 'true', filename
'C:/Users/someuser/Downloads/file.csv', delimiter '|', null '');

SELECT * FROM foreignfiletable;
-- ERROR: file »C:/Users/someuser/Downloads/file.csv« could not be
opened for reading: Permission denied.