Sorry people..
I must have screwed up the build somehow. It runs OK on my MacBook Pro, and I did bundle the Bullet/SDL libraries, but it seems others have had the bus error (and someone else was able to launch it, but the graphics didn’t work properly). I’ll try to fix it and post a link to the working version (if anyone is still interested…). Should be possible to compile and build it also, on any Mac, if you download Bullet and SDL.
Seems Mac people are still a tiny minority here