Thank you so much! It looks like the "did not respond" error happens consistently when we try to roll a pool of 0 dice.
Thanks so much! This has now been fixed as well. As a heads up, Sparks currently responds with a somewhat generic message for 0d SbR rolls because the various SbR systems are somewhat inconsistent about how they deal with such things; this might be patched in a future update if the scene settles on something concrete.