I think I got it to open. I had to change the prompt to the directory where the JAR file is located and the different filename (FurnitureLibraryEditor-1.29.jar). Now, I expected it to be populated with the furniture that's already in SH3D, but it's empty. Since I'm using the Microsoft Store version, I have not idea where (or if) it's stored on my hard drive. How should I proceed?