Fragments of Euclid segfaults at, as far as I can tell, the same place in startup - I conjecture something in my setup is breaking their underlying game engine. (This is not the first game I've had trouble with; I keep hoping to run into someone who is able-&-willing to help me figure out what I'm doing wrong. I have lots of experience on other Unices but I do not know the Linux-specific details that would let me figure this out on my own.)