Does that screenshot show the layout of the SD card? If so, it looks like the private folder is missing. (The wii folder is in the root instead of in the private folder.)
Does the game's data management menus let you switch to the SD card at all? From your post, I'm not sure if it lets you switch but doesn't display any data or if it doesn't let you switch at all.
Does the game's data management menus let you switch to the SD card at all? From your post, I'm not sure if it lets you switch but doesn't display any data or if it doesn't let you switch at all.