Unfortunately I cannot clearly remember exactly what I did immediately prior. I had been placing some blueprints the switched god mode off (cheats on), and cannot remember if I then did something else or not.
Extract from server log file (this was on a dedicated server):
46169.124 Error MainLoop.cpp:1429: Exception at tick 3530214: The mod Creative Mod (2.0.2) caused a non-recoverable error.
Please report this error to the mod author.
Error while running event creative-mod::on_gui_click (ID 1)
creative-mod/scripts/util.lua:127: attempt to get length of local 'source_inventory' (a nil value)
stack traceback:
creative-mod/scripts/util.lua:127: in function 'transfer_inventory_contents'
creative-mod/scripts/cheats.lua:821: in function 'apply_to_target_function'
creative-mod/scripts/cheats.lua:2163: in function 'apply_cheat_to_targets'
creative-mod/scripts/gui-menu-cheats.lua:2924: in function 'on_gui_click_in_cheats_menu_toggles'
creative-mod/scripts/gui-menu-cheats.lua:3338: in function 'on_gui_click_in_cheats_menus_gui_data_contents'
creative-mod/scripts/gui-menu-cheats.lua:3379: in function 'on_gui_click'
creative-mod/scripts/gui-menu.lua:322: in function 'on_gui_click'
creative-mod/scripts/gui.lua:295: in function 'on_gui_click'
creative-mod/scripts/events.lua:632: in function '?'
creative-mod/scripts/events.lua:1319: in function <creative-mod/scripts/events.lua:1263>
46169.124 Error ServerMultiplayerManager.cpp:84: MultiplayerManager failed: "The mod Creative Mod (2.0.2) caused a non-recoverable error.
Please report this error to the mod author.
Error while running event creative-mod::on_gui_click (ID 1)
creative-mod/scripts/util.lua:127: attempt to get length of local 'source_inventory' (a nil value)
stack traceback:
creative-mod/scripts/util.lua:127: in function 'transfer_inventory_contents'
creative-mod/scripts/cheats.lua:821: in function 'apply_to_target_function'
creative-mod/scripts/cheats.lua:2163: in function 'apply_cheat_to_targets'
creative-mod/scripts/gui-menu-cheats.lua:2924: in function 'on_gui_click_in_cheats_menu_toggles'
creative-mod/scripts/gui-menu-cheats.lua:3338: in function 'on_gui_click_in_cheats_menus_gui_data_contents'
creative-mod/scripts/gui-menu-cheats.lua:3379: in function 'on_gui_click'
creative-mod/scripts/gui-menu.lua:322: in function 'on_gui_click'
creative-mod/scripts/gui.lua:295: in function 'on_gui_click'
creative-mod/scripts/events.lua:632: in function '?'
creative-mod/scripts/events.lua:1319: in function <creative-mod/scripts/events.lua:1263>"
46169.125 Info ServerMultiplayerManager.cpp:805: updateTick(3530214) changing state from(InGame) to(Failed)
46169.140 Quitting: multiplayer error.
46170.659 Info ServerMultiplayerManager.cpp:146: Quitting multiplayer connection.
46170.659 Info ServerMultiplayerManager.cpp:805: updateTick(18446744073709551615) changing state from(Failed) to(Closed)
46170.666 Info UDPSocket.cpp:233: Closing socket
46170.667 Info UDPSocket.cpp:263: Socket closed
46170.667 Info UDPSocket.cpp:233: Closing socket
46170.844 Info UDPSocket.cpp:233: Closing socket
46170.845 Info UDPSocket.cpp:263: Socket closed
46170.852 Goodbye