[Kragenwar]

In SatchelWindow.lua this part

import "Turbine";
import "Turbine.Gameplay";
import "Turbine.UI";
import "Turbine.UI.Extensions";
import "Turbine.UI.Lotro";
import "Turbine.Utils";
import "Olenn.Satchel"
import "Olenn.DUInterface";

SatchelWindow = class( Turbine.UI.Window );

SetupWindow = class(Olenn.DUInterface.Window );

I don't know why you changed it. Before you changed it, the very last line there was creating an instance of the class setupWindow. Now you have it defining SetupWindow as a class (which is already rightfully done in the setupwindow.lua file). It should probably read as.

import "Turbine";
import "Turbine.Gameplay";
import "Turbine.UI";
import "Turbine.UI.Extensions";
import "Turbine.UI.Lotro";
import "Turbine.Utils";
import "Olenn.Satchel"
import "Olenn.DUInterface";

SatchelWindow = class( Turbine.UI.Window );

SetupWindow = Olenn.Satchel.SetupWindow();

As for your error about main, basically its telling you it can't load SatchelWindow.lua because of the above problem (SetupWindow.locked doesnt exsist because you didnt create an instance of the class setupWindow). Since it can't load that file init.lua cant import the Olen.SatchWindow package. Which also means that Main.lua cant import the Olen.Satchel package. Usually when you get a string of errors like that, you wanna just focus on the first one listed. Because quite often the unable to import errors are caused by that.