[Enigmail] v0.95.4 on OS X?

[Matthew MacLeod]

Hi,

Since upgrading to v0.95.4 on 2.0.0.6 on OS X (through Thunderbird's
update mechanism) I'm getting a failure on every sign/encrypt attempt.
The relevant portion seems to be:

gpg: skipped "<mmacleod at ieee.org>": unusable secret key
gpg: [stdin}: clearsign failed: unusable secret key


I haven't changed any other settings.  I've used enigmail for several
years on linux and OS X without difficulty.... any ideas?

--
Matthew MacLeod
mmacleod at ieee.org
"Human life is driven forward by its dim apprehension of notions too
general for its existing language." - Alfred North Whitehead