Hello,
When I go to Tools -> Manage Platforms, there is a "PC Engine Supergrafx" entry. Selecting it and clicking on "Edit...". This opens a new Windows with 3 tabs (Details, Folders and Notes).
In the details tab, right side, there is an "Image" frame where I can point to local files holding console pictures, using the mouse right button (shows "Add image...").
In the details tab, left side, there is an "Scrape as" option set to "PC Engine Supergrafx", but it is already set.
How do I force this scrape? Where is an action button for that? I am right now going through the "Tools->Download Metadata and Wizard" option, but I cannot see how this is going to bring the platform pics, since I believe it is made only to gather game-related stuff.