here is the error message:

The mod Module Inserter (5.2.4) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event ModuleInserter::on_configuration_changed
The mod Rivens Train Schedule Editor (0.1.2) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event TrainScheduleEditor::on_gui_closed (ID 89)
TrainScheduleEditor/control.lua:105: attempt to index field 'player2ui' (a nil value)
stack traceback:
TrainScheduleEditor/control.lua:105: in function 'getPlayerUI'
TrainScheduleEditor/control.lua:278: in function 'on_gui_closed'
TrainScheduleEditor/control.lua:477: in function <TrainScheduleEditor/control.lua:476>
stack traceback:
[C]: in function 'newindex'
__ModuleInserter/scripts/gui.lua:511: in function 'destroy'
ModuleInserter/control.lua:678: in function <ModuleInserter/control.lua:673>

Thanks for the bug report. I'll try to look into it this weekend.

Hey, I think I resolved the issue in the new release, could you verify it works for you too? Thank you