since one changes the kernel very often on remastering,then why not switch to squashfs instead of cloop ;running time are quite similar ,compression is a bit better (5%) and one is no more
dependent on this "version-kernel-cloop" problem.A squashfs image can be read by any kernel-squashfs-vanilla.
There is only 2 lines to replace by 1 line in miniroot.gz to reflect
mounting loopback image.sqfs instead of image.cloop
(see Armando's PrometeusX.iso)
Get squashfs -2.0 from Philip Lougher at sfnet.
It works beautifully .(see physicstools-1.3-sqfs-us.iso )