Tried running this on my Wii and it worked first try, although my Wii's disc drive is apparently going so I can't get it to read the Brawl disc again...but now that I'm trying to run it on my friend's Wii, it's not working at all. Wii is updated to the most recent version, SD card is clear of everything but the Project M related stuff, followed everything in the troubleshooting guide but nothing. I even redownloaded the Project M files from the site just to make sure it wasn't that.
Updated on the Project M launcher too, but as soon as I hit play, it goes to a black screen before returning me to the Wii menu. I'm at wit's end with this as everything -seems- like it should be working properly.