GPG and Evolution

[Pupeno]

Hello,
When trying to sign a mail with Evolution I get the following error:

Could not create message.

Because "gpg: problem with the agent - disabling agent use
gpg: writing to `-'
gpg: DSA/SHA1 signature from: "D3D61A45 Pupeno <pupeno at pupeno.com>"
", you may need to select different mail options.

Any ideas about what am I missing ?

Thank you.
-- 
Pupeno <pupeno at pupeno.com> http://pupeno.com