I've never had any luck with using Revisor, opening a terminal and entering "revisor" throws this error:
Cannot find anaconda-runtime in /usr/lib/anaconda-runtime
but I have been 90% + successful using "livecd-creator" from a terminal.
Just today livecd-creator made an up to date livecd image of 668 MB.
Opened a terminal as "su" and entered:
setarch i686 livecd-creator --config=/usr/share/spin-kickstarts/fedora-livecd-desktop.ks --fslabel=F1620120429
the "fslabel" reflects the day it was created and the "setarch i686" was placed in there as an x86_64 machine was used to create a live cd to be used on 32 bit systems.