I will try that, but first I've got to get another Pi3. My current one is far too well installed in a case, behind a screen and has all the cables nicely tided away to pull all that apart for some testing. :J

Hmm. Just downloaded it and installed it on my phone. It installed fine. Started, complained about the screen size, but I could say OK, then a splash screen came up, then it crashed/quit/closed

Yeah, that's pretty much what I'm getting!