People, please provide with your report what console revision and region you are using, and whether you have SuperCIC installed.
Are there any revisions I should mention for the US/NTSC SNES mini? I'm using an SD2SNES RevH from the Krikzz store, not sure about SuperCIC, is that a setting or an add-on a user installs?
Just tried playing Yoshi's Island. First level played fine, 2nd level having graphical glitches and then a black screen. Music still plays, but controller input doesn't do anything. Rom is from Smokemonster set, in the "Unplayable Chip Games" folder named "Super Mario World 2 - Yoshi's Island (Europe) (En, Fr, De)". How would I get the rom data so I can provide more useful debugging info?
Tried playing it again. 2nd level loaded fine, played for a bit and died, then when I reloaded the level it played for a few second before the same black screen/music only failure.
Update: forget about all the Yoshi's Island bugs I mentioned, as James-F pointed out I was running a pal rom on an NTSC console.