I'm trying to build my new appliance, but I'm suddenly starting to get errors during the `make` process. Toward the end it fails out with:

touch build/stamps/cdroot

basename: missing operand

Try `basename --help' for more information.

basename: missing operand

Try `basename --help' for more information.

cp build/root.tmp/usr/lib/syslinux/isolinux.bin build/cdroot/isolinux

Up to this point I've been able to build the appliance just fine, this just started happening today.