Crashing periodically in milestones_confirm_settings on the 1.1.1 version.

2623.123 Error MainLoop.cpp:1283: Exception at tick 587216: The mod Milestones (1.1.1) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event Milestones::milestones_confirm_settings (ID 187)
LuaGuiElement API call when LuaGuiElement was invalid.
stack traceback:
[C]: in function 'index'
__Milestones/scripts/gui_settings_page.lua:314: in function 'is_settings_page_visible'
Milestones/scripts/gui.lua:213: in function <Milestones/scripts/gui.lua:212>
2623.123 Error ServerMultiplayerManager.cpp:91: MultiplayerManager failed: "The mod Milestones (1.1.1) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event Milestones::milestones_confirm_settings (ID 187)
LuaGuiElement API call when LuaGuiElement was invalid.
stack traceback:
[C]: in function 'index'
__Milestones/scripts/gui_settings_page.lua:314: in function 'is_settings_page_visible'
Milestones/scripts/gui.lua:213: in function <Milestones/scripts/gui.lua:212>"

Thanks for the report. I'm away on holiday so won't be able to release a new version for a while.

In the meantime you can try this command: /c remote.call("milestones", "reinitialize_global") which should reset the GUI and fix this issue. Let me know if it doesn't.

Also if you can post your save file (from before you do the command) that will help me track this bug when I am back.