Cover sites discussion:
One of the four sites that are reached in rev 571 doesn't send good images. I wanted to test how things were going and so I backed up my old cover image and disk image folders and re-downloaded them all using the loader. I noticed the sites it downloaded from repeated in a cycle. Very neat. It lead to a pattern, every fourth image shows "No Cover Found" default image, but when I hit (1) to download covers the loader claims there are none missing. So it looks like one of the four sites is hosting incompatible Flat, 2D cover images. It's the SECOND site that it downloaded from, so we can maybe know the bad site by that. Looking at the files alphabetically the first bad cover is the second one, and it's three good, one bad, from then on. Assuming it goes in A-Z order. If it goes Z-A, I have 110 games loaded, so I guess do the math to figure out which one is the first bad one going backwards...
Disk images themselves came out fine, except for one, which is a bad image and hasn't been fixed anywhere to my knowledge:
Wii Sports Resort (J) does not have proper transparency, so it's a white block behind the disk.