gpg --list-keys not working

[Chris Wiegand]

I can't get gpg --list-keys or --list-secret-keys, or even -kv, to work. I
get this:

cwiegand $ gpg --list-secret-keys
gpg (GNUPG) 0.3.4; Copyright (C) 1998 Free Software Foundation, Inc.
This program comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to redistribute it
under certain conditions. See the file COPYING for details.

/home/cwiegand/.gnupg/secring.gpg
---------------------------------

gpg: Ooops: mpi crosses packet bordersecmem usage: 0/0 bytes in 0/0 blocks
of pool 0/16384
IOT trap/Abort

I'm trying to design pgp4pine so that you can selectively choose different
"local user", or signing keys, instead of just the default. However, I
can't get gpg to tell me what those keys are...