Got a non-recoverable error, server and my client crashed.

Error while running event osha_container_signals::on_tick (ID 0)
Index out of bounds: 101
stack traceback:
[C]: in function '__newindex'
__osha_container_signals__/scripts/functions.lua:102 in function <__osha_container_signals__/scripts/functions.lua3>

I only have 4 of the scanners in my game so far. all on provider warehouse from K2 with 500 spaces each. trains loading and unloading constantly and sometimes items get requested.

It's because you have too many unique items. I've uploaded a fix. Each combinator only has so many "slots" it can use. It will no longer overflow this list, but that means items could be missing.

thanks, I mean I only need the signal for available space in those warehouses anyway. do you process this list always? maybe a performance boost could be achieved by having option tick boxes to select what will be output.