Ok, it looks like nearly ALL of my links in the settings are not only absolute paths, but also pointing to C! The drive that LaunchBox is on is D, which used to be C, before I added the SSD (I don't want LaunchBox on the SSD). So I manually changed the paths for PC platform, and moved the files that were on C to D. I then Refreshed the Images. Strangely, I gained some (particularly the ones I was having trouble with), and lost some (I can't see a pattern for these though).
To check the problem, however, I chose one of the problem titles listed above (Konung: Legends of the North), deleted the images, then tried to download a new one. It still failed. So it looks like I need to clean up my install first before anything else.
How best to proceed? Is there a way/file I can bulk-edit to make the paths relative, or should I just reinstall?
@Vlansix:
Windows import did not detect these games, even though most of them ARE windows games, so I manually added them the only way I could figure out how: via MS-DOS import, then clearing the DOSBox check, and changing the platform to PC. I also changed all the successful Windows imports to PC. So, the games could be MS-DOS (Tiberian Sun, Star Wars: Rebellion), PC, or Windows. The Metadata is there for all of these titles, but each only has one associated image, Box Front. Hope this helps.