I am currently having a very similar problem and am very much a newbie to Linux as well as linux mce!
I am trying to network book a MD and it has the error above. On the admin site it hasn't got as far as creating a template for the MD I am trying to set up.
Do i need to manually create a MD template for this mac address and then somehow edit it to include the network card? I think i might be able to create the MD template but have no idea about how to edit it to add to the /etc/initramfs-tools-interactor/modules. Also where can i find out what details i will need to add here? I am using the motherboard that comes in the ASUS PUNDIT BBONE P2-M2A690G system, will try to find out what it is and post it up if that will help! It has attansic Gigabit NIC built in.