Hi,

I discovered this error recently:

The mod Construction Drones (0.6.11) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event Construction_Drones::on_ai_command_completed (ID 115)
LuaEntity API call when LuaEntity was invalid.
stack traceback:
Construction_Drones/script/construction_drone.lua:1612: in function <Construction_Drones/script/construction_drone.lua:1538>
(...tail calls...)
core/lualib/event_handler.lua:47: in function <core/lualib/event_handler.lua:45>
stack traceback:
[C]: in function 'index'
__Construction_Drones/script/construction_drone.lua:1612: in function <Construction_Drones/script/construction_drone.lua:1538>
(...tail calls...)
core/lualib/event_handler.lua:47: in function <core/lualib/event_handler.lua:45>

This happened when I removed a non-constructed Space Platform scaffold, I suspect the bots were just about to build it.

Space Exploration 0.4.51
SE Postprocess 0.4.10

Cheers

Tom