Gpg 1.2.4 with The Bat 2.11 error

[omn]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Hello gnupg-users,

I need help.

I'm a newbie to gpg. I've already import all my pgp keys to gpg. When
I try to sign & encrypt to others using The Bat built-in gpg, I
receive following errors:

gpg: mnman at pd.jaring.my: skipped: public key already present
gpg: D6506963: There is no indication that this key really belongs to the owner
gpg: [stdin]: sign+encrypt failed: unusable public key

I could only sign & encrypt to myself.

My gpg.conf as below:

default-key 0x0F8CFE9629D7378D
encrypt-to 0x0F8CFE9629D7378D
keyring c:\gnupg\pubring.gpg
secret-keyring c:\gnupg\secring.gpg
escape-from-lines
force-v3-sigs
rfc1991

What could be the source of error?

Thanks in advance.


- --
Best regards,
 omn                          mailto:mnman at pd.jaring.my
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.4 (MingW32)

iD8DBQFAypQJD4z+linXN40RAqsIAKCGHfEtXY59UIMPf641ZQSVC91nVQCbBlJT
cv3kgr/J1TL8367eGBUtho0=
=fYYU
-----END PGP SIGNATURE-----