I have an older minecraft world in which i wanted to load a new end dimension in so i deleted the DIM1 file and when I go to the end the towers are in the circle but no Ender Dragon or portal in the middle
What I expected to happen was...:
End island correctly spawns in with portal in the middle and Ender Dragon ready to kill me
What actually happened was...:
End island spawns correctly with no dragon or portal in the middle
Steps to Reproduce:
1. Have a previous version of a world
2. Have a generated end biome
3. Delete DIM1
4. Go back to portal to enter dimension
Environment
Put your operating system (Windows 7, Windows XP, OSX) and Java version if you know it here
As I recall, you need to edit level.dat (using NBTExplorer or a similar tool) in order to reset all information about the Dragon fight (/Data/DimensionData/1/DragonFight/*) - if you fail to do so, it will remember that you already fought the Dragon and will not spawn a new one.