I downloaded the latest version, immediately played some 10 minute matches, saved them, and went to check them and see that (obviously) the stage name, stage photo, and character icons (for the 4some) are all messed up. The replays loaded just fine if I watched them only within Minus. I've been doing all of this on a Wii if that wasn't clear.
I also, out of curiosity since I couldn't find any reliable information, experimented with altering the codes (adding/removing things) for Minima, which simply did not go well at all. The game just crashes if you try to do anything. But it's no hassle. Even with Gecko some of the codes just utterly fail to work properly for no apparent reason (such as no Masterpiece trial time).
I also, out of curiosity since I couldn't find any reliable information, experimented with altering the codes (adding/removing things) for Minima, which simply did not go well at all. The game just crashes if you try to do anything. But it's no hassle. Even with Gecko some of the codes just utterly fail to work properly for no apparent reason (such as no Masterpiece trial time).