Oh dang, I seem to be the one person that noting works for. Deblet's bootmenu starts good, gives me some good messages from the linuxrc file, drops to the splash screen, but then says "Incompatible bootmenu used", like in the screenshots. Can you tell me in which cases it says that? I've checked and rechecked all the options :-(

By the way, there seems to be a glitch with something, I've seen it somewhere else on this forum too: I had to change my device from mmcblk1p2 to mmcblk0p2 for it to start booting, despite the fact, that my ubuntu is on the external card! It's actually a bit of a mystery to me, because when I mount it, I use mmcblk1p2... I don't know how that happens, but you might want to add it as a little note.

Sorry for causing trouble, and THANK YOU for your work, this is the most exciting thing I've ever saw since I first booted Ubuntu two years ago :-)