I had the exact same issue on windows. Took me multiple attempts (uninstalling and reinstalling) to get it to work, and it did; however, so many textures are missing. There aren't any background textures. It's nothing but the interface.. Even the program logo is just a default windows program logo. I seriously am at a loss for how this happened. I downloaded it as one regularly would. I then went back and downloaded the vanilla version that came with the new .exe already installed, hoping that a pre-organized all-in-one download would fix it, but the result was the same. I'm missing world textures. The only thing I can see is my character and the HUD. Can you help, please?