Sorry, the install appears to have finished and failed a few minutes after I posted. The last two lines of /tmp/install_log had this:
<AI Feb 6 18:06:21> om_perform_install failed with error 800 <AI Feb 6 18:06:21> Auto install failed I got on the platform console as root and rebooted it, but it failed to boot. Before spending any more time on this, I need to update the default manifest to point to the internal pkg repo. Restarting the install now. -- This message posted from opensolaris.org