Hi! Since downloading this mod, I have been having issues. I can not open my save file anymore, and it is giving me a "selected datapacks is preventing this world from loading, you can manually fix it or use safe mode" Pressing the safe mode button doesnt do anything, and If I try to remove the mod and run the save file, it gives me an "invalid player data" message and takes me to the multiplayer section.

I am on a single player world and don't use datapacks. I tried deleting the config file and any other files that have "mining dimensions" name in it, but it still isn't doing anything. Is there anything I can do?

which version are you using?

Don't suppose you saw the big warning in red on the website about making a backup?

"WARNING: There are issue with adding/removing mods that add dimensions created via JSON method. Make a BACKUP of your world before using this mod, because if you later remove it, you may not be able to rejoin the world."

Don't suppose you saw the big warning in red on the website about making a backup?

"WARNING: There are issue with adding/removing mods that add dimensions created via JSON method. Make a BACKUP of your world before using this mod, because if you later remove it, you may not be able to rejoin the world."

Hi! I am using the most recent file uploaded on curseforge. I also did read the warning but didn't really know what the JSON method was, and if I was installing it via that method (copying and pasting the downloaded file) so I didn't make a back-up. My bad I guess! If there is no real way of fixing it, that's fine!

I don't know what other files I should be messing around/deleting though.

Some users have reported that using an NBT editor and removing the mining_dims from the level.dat works, but I have not had luck with that method.

Curious, what did you not like about the mod that you decided to remove it?

Part of this issue: https://bugs.mojang.com/browse/MC-197860

I tried the solution just now and it works.

uyp added a comment - 20/Jan/21 6:22 PM
Steps to get the dimensions back before this bug is fixed:
Open level.dat using e.g. https://irath96.github.io/webNBT/
Go to Data -> WorldGenSettings, and delete the dimensions tag

*** Actually, for this mod, just delete the mining_dim tags, leave the vanilla ones alone

Delete the 5 mining_dim in level.dat and save. rename the saved file to level.dat and move back into Minecraft folder

Looks like the Fabric folks are going to fix this issue.

FabricMC/fabric#2078

This has been fixed in the Fabric API since 1.18.2