8298.577 Error MainLoop.cpp:1382: Exception at tick 6848621: The mod Spidertron Patrols (2.4.9) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event SpidertronPatrols::sp-delete-all-waypoints (ID 259)
SpidertronPatrols/control.lua:79: attempt to index field 'cursor_stack' (a nil value)
stack traceback:
SpidertronPatrols/control.lua:79: in function <SpidertronPatrols/control.lua:77>
8298.594 Error ServerMultiplayerManager.cpp:92: MultiplayerManager failed: "The mod Spidertron Patrols (2.4.9) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event SpidertronPatrols::sp-delete-all-waypoints (ID 259)
SpidertronPatrols/control.lua:79: attempt to index field 'cursor_stack' (a nil value)
stack traceback:
SpidertronPatrols/control.lua:79: in function <SpidertronPatrols/control.lua:77>"

Thanks for the report, it looks like this happens when you press Control + Right-click when you don't 'have' a cursor stack, such as when respawning or spectating. Fixed for the next version :)