Sorry, more details and picky-ness: 1) The artwork entry points to a file that ends in ".dat.zip", where I believe it should just be ".zip" 2) The artwork file appears to be a different file than the file provided on the DATs page 3) The artwork DAT files and the icon DAT files are the two that have multiple versions. The icon files have names like "pS Icons Extended" which maintains order and consistency with the other DAT files while the artworks have filenames like "pS MAME Official Artworks" which annoyingly puts them out of order... ;p