claws mail will not verify signatures

[Charles Blair]

   I installed gpg4win, including claws mail.  I used gpa to import
a public key, and have been able to send encrypted mail using this
key.  However, when I try to verify the signature on the test
message below, I get a message saying "timeout".

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

   ... and delivered.

   What is the matter
with stupid clawsmail?
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.6 (GNU/Linux)

iD8DBQFLDUxlWOUslXANYskRAqf0AKDVhAjrBlVNp+SZgFop/npYsnATdwCg53FP
jKoA5vpohYt/78jOg+PosgM=
=leIW
-----END PGP SIGNATURE-----