BHyVe on 10-Current r245673

I am using FreeBSD 10-Current r245673 as a host on an HP p2-1394.  I have the host OS installed on 1 drive using UFS and a second drive using ZFS with a pool named 'tank.'  They layout for zfs for my guest install is /tank/guest01.
 
When using the command:
# bhyveload -d /tmp/FreeBSD-9.1-RELEASE-amd64-disk1.iso -m 512 -h /tank/guest01 guest01 && bhyve -c 2 -a -A -m 512 -g 0 -P -H -s 1,virtio-net,tap0 -s 2,virtio-blk,diskdev guest01 && sleep 20 && ifconfig tap0 up
 
I get the boot screen for FreeBSD 9.1 and after the timed pause it fails with:
Could not open backing file: No such file or directory
ACPI tables require and ioapic
Assertion failed: (error == 0), function main, file /usr/src/usr.sbin/bhyve/bhyverun.c, line 774.
Abort (core dumped)
root_at_localhost:/tmp#
 
I am using the bhyveload comamnd from a PDF I found from BSDCan but when I used the -m 768 -M 1024 as used in the doc it failed with a syntax error, so I switched to using just -m 512.  My .iso is in /tmp as indicated in my command with '-d'.  
 
I'm guessing my command is wrong, but not sure where.  Any help would be appreciated.  
 
Thanks,
Gary