@Serpicos: When you're not sure where to find things, you can always perform a full scan for root folder ("all packages"), switch to flat view and sort assets by supported types there. After that you can open desired assets, or if you'll select any asset in flat view without opening it, you can switch back to normal view and folder tree will expand up the folder with selected asset. I'd recommend to view some tutorials about general umodel usage, starting from the one from
tutorials section.
All works fine here - including meshes, textures and animations - with the latest umodel build (1590 at the moment). Some materials are custom though.