HI: Thank you, your suggestion worked, but the LR-C is missing the user presets for brush and gradients. Where would they be?
You tell me. Were they on your old hard disk, before it got wiped?
I also tried something before I got your advice. I used "import" on the new copy of LR-C to import the images from the hard drive, resulting in a many hours DL of about 500GB so I assume it brought in the RAW files but I can't find them. If I do find them should I delete them?
So this is a different catalog that you created before you got my advice? I think you can delete this catalog if the old catalog is working and only if the old catalog is working. Re-importing photos into a new catalog is never really a good thing to do. Before you delete this catalog, it will tell you where the photos are (right click on a photo and select Show in Finder or Show in Explorer) so you can delete the photos too, but again before you do any deleting, you have to be 110% sure these are not the same photos that the working catalog is using.