@brakcounty To get some more information, can you please schedule a debug deploy task (same as you would do a normal deploy task but just before you hit the last button in the web UI there is a check box for debug). Boot up the client as usual and let it boot up. Then you need to hit ENTER twice to get to the shell. Now type fog and ENTER again to start and step through all the process till you hit the error. It will throw you back to the shell. Now type:
sgdisk -gl /images/Win10Standard_GPT_EFI/d1.mbr /dev/sda
It surely will fail. Take a picture of the screen and post that here.