I tried removing all the partitions and doing it again and now I get directly into the normal GRUB, which let's me choose to boot Ubuntu, but that just says "error: no such partition." When I go into the GRUB command-line and try `ls` I get nothing back.
Any chance to get a link to v0018? I know that definitely worked for me.
For those people who need nvOC 0018, here is a link for download on Google Drive:
https://drive.google.com/drive/folders/1-4rnCYe2ZQOxe5u88LIHOhOxO8abRiBk?usp=sharingBest,
Arsen.