I'm trying to select a GPG signing key for one of my e-mail identities.
This opens a dialog offering the key for that e-mail address, but when
I click on the key, the dialog window starts refreshing as if in a loop.
This can only be stopped by canceling the transaction or reloading the
GPG keys, the "OK" button remains disabled throughout.

This makes it effectively impossible to use GPG in kmail. I tried adding
the GPG key ID in the emailidentities file while kmail wasn't running,
but this had no apparent effect; there was still no GPG key associated
with that identity as far as kmail was concerned.

Thank you for looking into this!

Anselm