wimboot Exec Format error (2e008081) uEFI

[rweisman]

Forgive me if this was already addressed, but my searching did not find the answer. (Yes I spend considerable time reading search results) I am trying to boot Winpe over http.

I have created a directory on my Webserver, extracted the winpe.iso file.
Extracted the latest wimboot to that directory
Create a script file in that directory
#!ipxe
kernel wimboot
initrd -n Boot/BCD BCD
initrd -n Boot/boot.sdi boot.sdi
initrd -n sources/boot.wim boot.wim
boot

For trouble shooting I have used make bin-x86_64-efi/ipxe.efi EMBED=embed.ipxe

The contents of ipxe.efi
#!ipxe
dhcp
shell

My PXE EFI grub command to boot this
chainloader /ipxe.efi

All good booting the ipxe.efi to a shell.

When I try to boot / chain.. to the boot.ipxe (Saved as utf8) file on the webserver
ie:
boot http://xx.xx.xx.xx/www/aape/boot.ipxe
I get an ok, then:
I get the error "Could not Select: Exec format error (http://ipxe.org/2E008081)

I just started this project, so all the stuff is the latest release.

Maybe this is something stupid, but I am stuck at this point.

Thanks for any help.