The mods is crashing when I create a new sandbox world.
See:
https://imgur.com/a/jI3M6Mi

Thanks

if it helps here's the text from the logging and that dialog

The mod Fill4Me (0.9.1) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event Fill4Me::on_init()
Fill4Me/stdlib/event/event.lua:156: Fill4Me/stdlib/event/event.lua:156: Fill4Me/fill4me/ammo.lua:80: attempt to index global 'production_score' (a nil value)
stack traceback:
[C]: in function 'error'
Fill4Me/stdlib/event/event.lua:156: in function 'dispatch'
Fill4Me/stdlib/event/event.lua:38: in function <Fill4Me/stdlib/event/event.lua:37>

I have a good idea for what is wrong, I will hopefully get a chance to work on this later today. This isn't the first time the production_score function has changed between releases.

Fixed in 0.9.2.