Uwe Brauer <oub@mat.ucm.es> writes:

>    > Could it be that the variable you want to set is epg-key-id?  The
>    > user id should probably be your name + email or similar.
>
> Thanks for pointing this variable out,  but no it does not help.

Have a look at the function `mml2015-epg-sign'.  It seems like it will
query you for the key to use with `epa-select-key' if there are many
unless one is marked as default.  Or maybe the signer-names don't match
your new key...

Bye,
Tassilo