Minecraft Version

1.16.5

Forge Version

36.2.2

Mod Version

2.5.1

Modpack & Version

Crashed on Gyrnolia (CurseForge) 0.7.5
(you have to update oretweaker in this version of the pack to get the error occuring)

Describe the bug

no specified ores generate at all. the world consists of stone and features by other generators like quark

How to reproduce

this error occurs to me when i update OreTweaker from 2.3.1 to 2.5.1 in my modpack "Crashed on Gyrnolia" (see above). this even happens if OreTweaker's config files are completely deleted or reinstalled.
furthermore all entries in every single file of the data folder gets multiplied. i have this paste which shows before and this paste which shows after a world generation. this continues each time a world generates

Screenshots / Images

you can probably imagine a world containing only minecraft:stone :P

The auto updater to the new v2 data structure does not always work in all cases. In rare cases like this you have to delete the entire config/oretweaker folder and restart the game. You can backup your old oretweaker.json by moving the config/oretweaker/backup folder outside the config/oretweaker before deleting it.

The new v2 data structure will then generate properly and you can tweak the files again. Not to much to fix here cause the auto updater was made to help convert from the v1 data structure to the new v2 data structure. Hard to say why it breaks in this case and hard to replicate so doubt it will be fixed.

Just tested it with your pack and found a way to fix it.

1. Delete the old OreTweaker-1.16.5-2.3.1.jar
2. Delete the config folder config/oretweaker
3. Install the new OreTweaker-1.16.5-2.5.1.jar
4. Run Minecraft and create a new world.

Works just fine.

i'm sorry but i have to insist on this..
like i said in the original:

this even happens if OreTweaker's config files are completely deleted or reinstalled.

just tried it again:
i. modpack on old version: i delete oretweaker config folder
ii. update oretweaker
iii. launch modpack, generate world
and its stone + vinteum from Mana and Artifice + Quark Features
the generated files in data look fine but they don't work!

example of iron_ore.json which autogenerated:

{
  "oreConfig": [
    {
      "ore": "minecraft:iron_ore",
      "filler": "minecraft:stone",
      "minY": 1,
      "maxY": 64,
      "maxVeinSize": 8,
      "spawnRate": 20.0,
      "biomeBlacklist": [],
      "biomeWhitelist": []
    }
  ]
}