So I am interested in getting world edit for my single player world. I was thinking some of you could help me out. I know how to download it and put it into the Minecraft jar but I have tried about 10 time with different like mods and versions but nothing works. I know about deleting the META-INF file and that doesn't help. I have even deleted the entire .minecraft file and re-downloaded Minecraft and it still didn't work. Any help?