Hey Chris,
Yes the file structure of the component is changed now, now the mosaic_style css files are moved to /media/com_bportman/site/css and other css files are in /media/com_bportman/common/css and /media/com_bportman/admin/css.
We have tested the component at our end and it is working fine.
we will soon be releasing the component officially covering the latest changes done by behance,