Is it possible to load Chromium OS to Beagle Board Rev D

[james...@yahoo.com]

I have not had any luck building a bootable disk.  Ive tried the beagle-rev-c5-3.2GB-r1.img, and Angstrom-TI-GNOME-image-eglibc-ipk-v2012.01-core-beagleboard-2012.01.11.img but I receive an error each time I try to transfer the image onto a card (Could not validate source - Invalid argument).  I'm using a Macbook pro Mountain Lion.  

I'd like to get Chromium OS onto my beagle board Rev D.

-James