Worst-case scenario: the UEd Goblin wipes the map and burns down your house.
UE Explorer is a UnrealScript decompiler for Unreal Engine 1, 2 and 3. Written in C# with a straight forward user-friendly UI(User Interface). Giving you an easily organized TreeView so that you can decompile each Field individually.
UE Explorer supports all Epic Games for the PC such as Unreal, UT, UT2004, UT3 and the Unreal Development Kit(UDK).
UE Explorer uses the UELib(made by Eliot) which is a library made in C#. The library is used to analyze UnrealPackages such as .u and .utx files and collect any important information to be used for whatever reason the developer wish. It provides functionality to deserialize almost any Object, decompile and minor modifications. It also can be extended by registering your own classes e.g. Textures.
You can download UE Explorer from here.