Using PGP signature with mutt ..problem

[Cliff Sarginson]

Hello
I am trying to use pgp (and or gpg) signatures with mutt.
I have set up the keys and directories etc.
When I try to sign the message with the option from the
"p" command I get an errno(2) ..no such file or directory.
pgp and gpg are both on the PATH.
Clues ?
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Regards
Cliff