I used Hillwood's openSUSE-Leap-42.2-livecd-gnome.x86_64-1.0.0-Build25.1.iso
aplliance, build at 
https://build.opensuse.org/package/show/home:embar-:boo1011147/livecd-gnome

I try to install with yast2-live-installer-3.1.10-4.1 from
obs://build.opensuse.org/home:hillwood . "Copying the live image to hard disk
failed" at 100% image copied into hard disk. I am not sure what causes problem
here... But I can not reproduce this type of error in another appliance...

I am not sure what causes problem here...

>From y2logs:

ShellCommand.cc(shellcommand):78 /bin/cp: error writing '/mnt/etc/mtab':
Invalid argument
[Ruby] clients/inst_live_doit.rb:213 Executing df -P
<...>
Ruby] clients/inst_live_doit.rb:220 Ruby] clients/inst_live_doit.rb:222 Index 3
is out of array size
[Ruby] clients/inst_live_doit.rb:254 Copying the live image to hard disk
failed.