Not sure about this but make a backup of your current state (you probably already have) then in Voodoo app delete the SU backup then try again. Also I'm not sure if it can be installed on JB leak (not saying don't do it, I'm saying I don't know.)
@dhacker29 or @Hashcode0f via twitter will be able to answer your questions if my suggestion doesnt work.
EDIT: just updated the OP with his download page... There seems to be a newer version out anyway, try them.