Bensuperpc,
I'm surprised you are having this issue with standard Ubuntu ISOs, since I've tested all three of these Ubuntu releases (16.04, 18.04, 18.10).
Are you using an Ubuntu derivative (as Pddesta was doing with Eset SysRescue)?
Would you please share, for each ISO you are customizing:
(A) Download location URL of the ISO you are customizing
(B) Output of ls -l <Cubic Project Folder>/custom-live-iso/casper
(C) Contents of <Cubic Project Folder>/custom-live-iso/boot/grub/grub.cfg
(D) Contents of <Cubic Project Folder>/custom-live-iso/boot/grub/loopback.cfg
Bensuperpc,
I'm surprised you are having this issue with standard Ubuntu ISOs, since I've tested all three of these Ubuntu releases (16.04, 18.04, 18.10).
Are you using an Ubuntu derivative (as Pddesta was doing with Eset SysRescue)?
Would you please share, for each ISO you are customizing:
(A) Download location URL of the ISO you are customizing
(B) Output of ls -l <Cubic Project Folder> /custom- live-iso/ casper
(C) Contents of <Cubic Project Folder> /custom- live-iso/ boot/grub/ grub.cfg
(D) Contents of <Cubic Project Folder> /custom- live-iso/ boot/grub/ loopback. cfg