ssh failing on my instaDMG images

hey all, not sure if this is actually a problem caused by InstaDMG, but it's definitely occuring in my instadmg images. . . . Basically, no one can ssh onto these machines, even though ssh is enabled in system preferences. I am enabling that option in my images, so maybe i'm not doing that correctly . . . . If you were going to enable ssh for all users in an instaDMG image, how would you do it?