I'm glad to see this progressing
I couldn't get the previous demo working on my A1200/ACA1221c, will test the new version soon.
Edit: Darn, still no go. It starts loading, tells me it will reboot and does so, and then just reloads workbench. RAM_0 icon appears on the workbench but it only has directory "S" in it. In WinUAE the demo works nicely.
I'm wondering if it just runs out of RAM, but it basically shouldn't as I have a minimum (as in 'vanilla') Workbench 3.1 setup and no applications running, not even a background picture etc. eating up RAM. 1.959kb chip & 8.579kb fast RAM free.