gpg: fatal: cannot open /dev/tty: Device not configured

[Ron Arts]

Hello fellow gnupg users,

I get this message when I run gnupg from cron as any user.
gnupg is run from a script to decrypt a file. The commandline used is:

echo "my secret passphrase" | gpg --passphrase-fd -d file-to-decrypt.gpg

This is on a redhat 5.1 system.
gnupg version is 0.9.4

When I run the script from the command line it works fine.

Has anyone experienced the same problem?

Regards,
Ron Arts