I get an error when I try to back up my Nucleus to a SimpleSave HP storage drive.
The SimpleSave shows in folders but no file is offered.
When I try to manually add a file it is rejected.
How has the SimpleSave drive been formatted? If you were using it connected to your Mac previously, it is possible that it has been formatted as HFS/HFS+ - this format won’t work for Backups of a Nucleus (it’s Read-only to a Nucleus).