elauso

This is BIG! I'm a developer with a strong affinity to open source, so I'm really interested to see where this is going.

I have no experience with writing software for a (very complex) hardware synth, but I'm eager to peek inside the driving bits and bytes of the Deluge

It looks like there is a song that is somehow broken and crashes the Deluge once it tries to load it (just guessing, really).
I would assume it's one of those songs starting with 'D'. You could try to narrow it down by removing a few songs (copying to your computer and removing it from the SD card) and then see if you can scroll through the list again.

Once you found the song that brings down your Deluge, I'm sure someone here can help identify the problem (if you're willing to upload the suspicious song file).