I meet with the same problem - tried to create amd64 image on 32 bit system with command:
ubuntu-defaults-image --arch amd64 --ppa baltix-members/ppa --components main,restricted,universe,multiverse --package ./baltix-defaults_12.04~3~precise1_all.deb
But instead of amd64 image I got i386 image :(
It seems ubuntu-defaults-image script simply chooses architecture from running system and ignores --arch option :(
I meet with the same problem - tried to create amd64 image on 32 bit system with command: defaults- image --arch amd64 --ppa baltix-members/ppa --components main,restricted ,universe, multiverse --package ./baltix- defaults_ 12.04~3~ precise1_ all.deb
ubuntu-
But instead of amd64 image I got i386 image :( defaults- image script simply chooses architecture from running system and ignores --arch option :(
It seems ubuntu-