I've had these crashes, and I can tell you exactly what it is that is causing it... You're not at the top level of the repl, for some reason, defining things a

I've had these crashes, and I can tell you exactly what it is that is causing it... You're not at the top level of the repl, for some reason, defining things at a lower nesting level of the repl sometimes produces crashes, it's annoying yes, but it's not a huge disaster :) if you use ",t" to get back to the top level after an error, you shouldn't see those crashes.