Fix for all dimension bugs; no nether, no ender dragon, minecolonies

[ViRb3]

Prior to MinecraftForge/MinecraftForge#7513 being merged into Forge, dimensions were created improperly, leading to a bunch of issues such as:

• Ender Dragon not spawning - No ender dragon in 1.3.1 #333
• Can't travel into any dimension, such as the Nether - Unable to go to Nether after 1.16.3 update #137
• Cross-dimension biome mixing - [1.3.0]Nether Biome in the overworld #305
• Overworld not recognized by mods - Minecolonies don't work (after the update?) #396

This was fixed in ATM 1.3.3, Forge 35.1.4. Every new world created after these updates will work as expected. If you can reset your world, this is the simplest and most reliable fix.

For existing worlds, however, you have to manually clean the mess. Here I propose a "universal" solution that should get you back to working. At a very high level: take a newly generated level.dat, which holds proper dimension information, and use it with your existing world. Unfortunately, this fix will not solve any problems for existing chunks - if your Ender structures are missing, or if your biomes are mixed. The only solution there is to re-create the affected dimensions, and possibly use mcaselector to transfer over any important chunks.

⚠️ NOTE: The steps described below are for a dedicated server, not for single player. For the latter, there are some major differences:

• The world folder is not world, but /save/New World, where New World is your single player world's name
• Player information is not stored in a dedicated playerdata folder, but instead in a NBT structure Data/Player inside level.dat. You will most probably want to copy it over. See: Fix for all dimension bugs; no nether, no ender dragon, minecolonies #437 (comment)

Without further ado, here is the process:

1. Update to ATM6 1.3.3, which has the fixed Forge version 35.1.4
2. Stop the server
3. Use NBTExplorer to get the seed for the existing world
   
4. Edit your server.properties and set the seed= to your old seed noted above
5. Rename the world folder with all of your world data to world.bak. Create a zip of it as a second backup, just in case
6. Start the server. A new, fresh, bug-free world will be generated in a new world folder
7. Stop the server
8. Copy over the level.dat from the new world to the old world.bak, replacing the old level.dat. Additionally, in the old world.bak:
   • Use NBTExplorer to re-apply any properties that may be important to you, such as the server time elapsed or game rules
   • If your end dimension is impacted by the ender dragon not spawning bug, delete your DIM1 folder
   • If your nether dimension is impacted by the random biome bug, delete your DIM-1 folder
   • If you can, delete any additional dimension folders, such as the whole dimensions folder
   • Make sure you don't have anything important in the dimensions that you're deleting
9. Delete or rename the new and now unneeded world folder
10. Rename the old world folder, world.bak, back to world
11. Restart the server. Everything should be fixed

We tested this on our server and it worked great. Hope it helps people.

[RickyvdBerg]

Thanks a lot for looking into this and providing a solution. My world has been plagued by many of these issues, I am going to implement this fix now and report back when I have results.

EDIT: IT WORKED <3

[GamingDestroyer]

How is this done for a singleplayer world?

[ViRb3]

The same procedure, except the folder is not world, but /save/New World, where New World is your single player world's name.

[RealTrueDeviL]

Can I just add, take EVERYTHING off your character, into a chest, I just did this fix, lost everything I had on me, including a full set of ATM Armour, special weapon, the lot...

[ViRb3]

Your character/player items are located in the playerdata folder. If you followed the instructions carefully, the only file that you will have changed is the level.dat and possibly some dimensions, but your playerdata folder should be completely intact. Either way, if you made a backup you can simply restore it and try again.

[RealTrueDeviL]

I thought it was seperate too, but my char is honestly wiped, all I have is the Astral Tome.. I did make a backup, so I'll just do it again.. :)

[RealTrueDeviL]

Ok, seems level.dat hold player inventory data...

[ViRb3]

Is this a Single Player world by any chance?

[RealTrueDeviL]

yes, I'm guessing that matters >.< however something to note?

[RealTrueDeviL]

Either way, you can copy the player data, from the backup, to the new one in NBTExplorer, just remember to rename it correctly, and delete the old one..

Trying it now

[ViRb3]

Interesting. I suppose it makes sense that everything would be in level.dat if there's just one player, but I didn't know that. Thanks for letting me know. I'm afraid that I haven't tested this in single player, so I can't help much. Obviously, you will at least want to copy-paste your whole Player structure from the old save. Please let me know how you end up making this work and if there's anything else you did, so I can update the main post.

[RealTrueDeviL]

FOR SINGLE PLAYER:

Make sure Minecraft isn't running..

Make a backup of your OLD level.dat, so you don't overwrite it, put it somewhere safe (desktop)..

Then copy from that (old level.dat) to the NEW level.dat.. (Player: xx entries)

Delete the original one, which should be Player: 43 entries..

Rename Tag - Player (Copy 1) to Player

Save, and restart MC

Now it should work, and you'll have all your items..

[Devoidsoul675]

Super helpful, thank you so much

[glahera]

Very nice, thank you for your contribution. Back when server updated to 1.3.2c, I just told everyone on my server to migrate to mining dimension then delete every other dimensions (though The Other still doesn't generate any dragon...) and it works out fine for us.

[andrewsf]

The issues with Ice and Fire are completely unrelated to the Forge dimension info bug that led to this problem.

And yes, your player data is only stored by UUID in playerdata if you are connecting to the server. If you are hosting the server (including single-player and local play open to LAN), then your data is in the level.dat file. I had been wondering why it wasn't brought up.

IMO the much better solution than copying things into a new level.dat file is to fix the old one.

• open NBTExplorer with the existing level.dat
• open NBTExplorer with a brand new level.dat
• copy/paste the WorldGenSettings/dimensions entries for the_end and nether from the new level.dat file to the existing level.dat file
• if you want a new Nether that generates correctly, delete the DIM-1 directory
• if you want a new The End that generates correctly, delete the DIM1 directory, and copy/paste the DragonFight key from the new level.dat file to the existing level.dat file
• if you don't want a full regeneration, use MCASelector to trim DIM-1 and/or DIM1 as you like
• call it a day.

[RealTrueDeviL]

IMO the much better solution than copying things into a new level.dat file is to fix the old one.

* open NBTExplorer with the existing level.dat

* open NBTExplorer with a brand new level.dat

* copy/paste the `WorldGenSettings/dimensions` entries for `the_end` and `nether` from the new level.dat file to the existing level.dat file

Wait, so you're saying a 'better' solution, than copying things into a new level.dat... Is to copy things OUT of a new level.dat, into your existing one... So no difference.. Either way works.. which means it's not better.. it's equal..

I'll give you points for trying to 1-up my solution tho...

[andrewsf]

So no difference.. Either way works.. which means it's not better.. it's equal..

Your house has a broken radiator. It's very cold. Would you prefer to get a new radiator and put it into your house? Or would you prefer to get a new house, and move everything out of your existing house?

If you know what specific things are wrong, fix those things. It's not likely you, modders, or even Mojang know every single thing in your old save file that needs to be mirrored to a fresh one to avoid data loss -- if it's even possible to move everything without winding up with some bad state due to something outside of level.dat that has to match up.

I'll give you points for trying to 1-up my solution tho...

Thank you for the internet points, but it's not your solution, it's ViRb3's solution, and I'm interested in helping users, not one-upping people.

[RealTrueDeviL]

Well, I was the one who fixed my single player, and put the solution here, which means, it worked perfectly fine, I still have all my waypoints, my save has my base, and everything's working as it should be..

Had zero side effects doing it my way..

ViRb3's solution was for servers, mine is for single player, hence why he asked me to put details of what I did to get it working... So.. Yeah, that is my solution.. Based on ViRbe's idea

[Lejoni]

I did used this fix. And it worked fine, I could again go to the Nether and it looked much better than before.
But now again I can't zone to the Nether. Seams like something keeps breaking it.

[whatthedrunk]

Going to keep this pinned for reference but close the issue for now. The new version of forge fixes this finally.

[exastencil]

I'm not sure about the other problems, but I just had an End Dimension generate without an Ender Dragon or End Fountain in All the Mods 1.5.1 with Forge 36.0.9 in a single player world.

I tried deleting the End and regenerating it, but the same problem occurred: Obsidian spires generated with crystals but no dragon or fountain. Not sure what to do now.

[ViRb3]

@exastencil This was a known issue with Forge 36.0.9 / ATM 1.5.0. Update to Forge 36.0.13 / ATM 1.5.1 and then regenerate your End dimension to fix it.

[exastencil]

Hmm, updated to ATM 1.5.1 and Forge 36.0.13, regenerated my End dimension and still no dragon or fountain. Same as before.

[RealTrueDeviL]

I've just checked my 'End' dimension after the 1.5.1 (ATM6) update, and I also have no Dragon, I've never killed him >.< I've not tried to re-create the end tho.. As I had a dragon there, now it's gone..

[Tops420]

Same issue, End crystals don't summon the dragon.. Regenerating DIM1 fails to recreate the fountain (with level.dat also with edits to 0 for the dragon fight variables), fails to spawn the OG dragon also

[Tops420]

Update to my previous post..

I fixed my issue. I had to create a fresh world using my seed, my old playerdata folder, specific MCA files in the region folder (located the ones i wanted to keep with MCAselector), certain configs i edited in the serverconfig folder, the data folder, mine colonies folder.. End was fully restored, end crystals work.. and also Nanonite Crystals started to appear from Environmental Tech Void Miner which wasn't generating previously. Hope this info is useful to someone

[RealTrueDeviL]

@ViRb3

@exastencil This was a known issue with Forge 36.0.9 / ATM 1.5.0. Update to Forge 36.0.13 / ATM 1.5.1 and then regenerate your End dimension to fix it.

I can confirm, this method does not work, I used NBT Editor to change the 'killed' status back to 0, deleted Dim1, then started the game, got a new End, but no dragon or portal.. I didn't even go to the end when I had 1.5.0, I've not been there in a few updates, after I fixed it the 1st time..

Maybe I should try that fix again...

[eudaimyst]

My world was created with 1.4.9b and having this issue as of 1.5.1 Wasn't able to respawn the ender dragon and after deleting the end dimension to see if regenerating would fix it, the portal is completely missing.

(The original resolution from ViRb3 of creating a new level.dat still works)

[JheregJAB]

Just got this issue in ATM6 1.5.1 with forge 36.0.13. My planned troubleshooting steps are to update to 1.5.3b first, then to delete the dimension for the end and try again. If that fails I will start looking into the other troubleshooting steps listed here.

Since I am way past the supposedly effected forge version I am not completely sure its the same issue.

update: After upgrading to 1.5.3b and deleting the end dimension, the issue was not fixed. However, following the instructions in this thread to replace level.dat and also delete the end did solve the problem.

[Sakata-MC]

This appears to be back in a fresh AtM6 1.7.7 world.

[andrewsf]

This issue (which exists primarily to document a workaround for miscellaneous symptoms, rather than an actual specific problem, and therefore should live in the Wiki) is in a Closed state.

If you have newly encountered a problem, and you do not see any other issues that describe your issue, create a new issue ticket with all the relevant data. Even if this workaround works for you, this would not be a good place to keep track of the problem.

[Shibva]

ok I tried something and I found it to work

the best solution thought having todo anything super complex like what I have seen above

all you have todo is to edit these values in the Level.dat

idk what one it was, but all of these were set to one and when I reloaded the world after setting those 3 to zero, the portal frame regenerated

[Possemaster]

Just remove all children below DragonFight, save the level.dat, remove the DIM1 folder and restart the server will fix your Spawn issue in the END