i had hw issues and had to reinstall everything from scratch on sunday. (still in process)
i just came across this bug where instack-virt-setup gave this error
"Cannot find $TRIPLEO_ROOT/tripleo-incubator/scripts"

google (and slagle) tells me this can be ignored so i did this workaround

mkdir -p /home/stack/tripleo-incubator/scripts

and i was able to continue with instack-virt-setup