generate command fails on OpenPGP cards

[Matt Alexander]

I created a test key pair on an OpenPGP card.  When I try to run generate
again to replace the test key pair, I get the following error:

  gpg: existing key will be replaced
  gpg: please wait while key is being generated ...
  gpg: pcsc_transmit failed: not transacted (0x80100016)
  gpg: apdu_send_simple(0) failed: card I/O error
  gpg: generating key failed
  gpg: key generation failed: general error
  Key generation failed: general error

This is on an Ubuntu Dapper box:
gnupg: 1.4.2.2-1ubuntu2.5
pcscd: 1.2.9-beta9-1
libpcsclite1: 1.2.9-beta9-1

Any ideas what the problem might be?
Thanks,
~Matt
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