I downloaded the world from realm, and put a few custom map_xxx.dat in the world/data folder, I uploaded it and I worked. Hours later, I downloaded it again and puts some more custom map images in it. It says: Upload failed!(Corrupted file) after finished uploading. I tried to remove the files I added, the same thing happened. Then, I downloaded the save file from realm, and reuploading it without adding anything. It still says: Upload failed! (Corrupted file). Then I tried to upload other worlds from my local save folder. None of them works, all of them were rejected. It just shows Upload failed! (Corrupted file) every world that I've uploaded works, none of them were corrupted. Please help!