oh cool, someone tried the immolator.
New world or from a save? Any other mods enabled?
Sorry about that spider, i was playing a lot with it trying to make it unique and to be honest i was expecting for it to have issues. Though when i was testing locally it was still working, so my best current guess would be that it has some incompatibility with the save.
looking over the code:
table.insert(global.immolator, immolator)
it's failing at this line because it was expecting a table but got a nil, so that means the first initialization of the table didn't work, so if i check the table and remake it right before it should fix this issue.