this happened immediately upon starting the plan, let me know if you need more info

https://i.imgur.com/S498yKY.png

8823.540 Error MainLoop.cpp:1288: Exception at tick 24599178: The mod Mining patch planner (1.5.0) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event mining-patch-planner::on_tick (ID 0)
__mining-patch-planner__/layouts/simple.lua:1074: attempt to index field 'speed' (a nil value)
stack traceback:
        __mining-patch-planner__/layouts/simple.lua:1074: in function '_display_lane_filling'
        __mining-patch-planner__/layouts/simple.lua:1099: in function <__mining-patch-planner__/layouts/simple.lua:1094>
        (...tail calls...)
        __mining-patch-planner__/control.lua:31: in function <__mining-patch-planner__/control.lua:23>
8823.540 Error ServerMultiplayerManager.cpp:92: MultiplayerManager failed: "The mod Mining patch planner (1.5.0) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event mining-patch-planner::on_tick (ID 0)
__mining-patch-planner__/layouts/simple.lua:1074: attempt to index field 'speed' (a nil value)
stack traceback:
        __mining-patch-planner__/layouts/simple.lua:1074: in function '_display_lane_filling'
        __mining-patch-planner__/layouts/simple.lua:1099: in function <__mining-patch-planner__/layouts/simple.lua:1094>
        (...tail calls...)
        __mining-patch-planner__/control.lua:31: in function <__mining-patch-planner__/control.lua:23>"

Could you provide a mod list or a save file?

Actually, I can fix without the modlist.

Released an update that fixes it. Thanks for the report.

nice reaction time, can confirm it doesn't crash now :D