I'm getting this error in FML-client-latest.log

Description: Failed reading config gentle.json

java.lang.RuntimeException: Invalid state ore=niter for block minecraft:air

gentle.json:

[
{
"dimension": -1,
"ores": [
{
"block": "minecraft:quartz_ore",
"size": 15,
"variation": 4,
"frequency": 7,
"min_height": 0,
"max_height": 128
},
{
"block": "substratum:ore",
"state": "ore=niter",
"size": 7,
"variation": 4,
"frequency": 4,
"min_height": 0,
"max_height": 128
},
{
"block": "substratum:ore",
"state": "ore=sulfur",
"size": 7,
"variation": 4,
"frequency": 4,
"min_height": 0,
"max_height": 128
}
]
},
{
"ores": [
{
"block": "minecraft:clay",
"size": 22,
"variation": 12,
"frequency": 5,
"min_height": 0,
"max_height": 64
},
{
"block": "minecraft:obsidian",
"size": 4,
"variation": 2,
"frequency": 1,
"min_height": 16,
"max_height": 24
},
{
"block": "minecraft:stone",
"state": "variant=andesite",
"size": 30,
"variation": 10,
"frequency": 10,
"min_height": 0,
"max_height": 80
},
{
"block": "minecraft:stone",
"state": "variant=diorite",
"size": 30,
"variation": 50,
"frequency": 10,
"min_height": 0,
"max_height": 80
},
{
"block": "minecraft:stone",
"state": "variant=granite",
"size": 30,
"variation": 10,
"frequency": 10,
"min_height": 0,
"max_height": 80
},
{
"block": "minecraft:coal_ore",
"size": 22,
"variation": 15,
"frequency": 15,
"min_height": 4,
"max_height": 128
},
{
"block": "minecraft:iron_ore",
"size": 14,
"variation": 10,
"frequency": 10,
"min_height": 0,
"max_height": 64
},
{
"block": "minecraft:gold_ore",
"size": 16,
"variation": 13,
"frequency": 4,
"min_height": 0,
"max_height": 37
},
{
"block": "minecraft:redstone_ore",
"size": 16,
"variation": 8,
"frequency": 8,
"min_height": 0,
"max_height": 24
},
{
"block": "minecraft:lapis_ore",
"size": 22,
"variation": 18,
"frequency": 2,
"min_height": 0,
"max_height": 32
},
{
"block": "minecraft:emerald_ore",
"size": 8,
"variation": 4,
"frequency": 2,
"min_height": 0,
"max_height": 21
},
{
"block": "minecraft:diamond_ore",
"size": 11,
"variation": 5,
"frequency": 2,
"min_height": 0,
"max_height": 23
},
{
"block": "substratum:ore",
"state":"ore=copper",
"size": 11,
"variation": 7,
"frequency": 6,
"min_height": 20,
"max_height": 50
},
{
"block": "substratum:ore",
"state":"ore=tin",
"size": 7,
"variation": 4,
"frequency": 5,
"min_height": 16,
"max_height": 52
},
{
"block": "substratum:ore",
"state":"ore=nickel",
"size": 14,
"variation": 10,
"frequency": 5,
"min_height": 0,
"max_height": 36
},
{
"block": "substratum:ore",
"state":"ore=silver",
"size": 14,
"variation": 7,
"frequency": 5,
"min_height": 0,
"max_height": 42
},
{
"block": "substratum:ore",
"state":"ore=lead",
"size": 7,
"variation": 5,
"frequency": 6,
"min_height": 16,
"max_height": 48
},
{
"block": "substratum:ore",
"state":"ore=platinum",
"size": 5,
"variation": 2,
"frequency": 3,
"min_height": 20,
"max_height": 60
},
{
"block": "tile.techreborn.ore",
"state":"type=iridium",
"size": 5,
"variation": 3,
"frequency": 4,
"min_height": 15,
"max_height": 30
},
{
"block": "immersiveengineering:ore",
"state": "type=aluminum",
"size": 16,
"variation": 10,
"frequency": 6,
"min_height": 16,
"max_height": 40
},
{
"block": "bigreactors:brOre",
"size": 16,
"variation": 10,
"frequency": 16,
"min_height": 16,
"max_height": 50,
"biomes": [
"biomesoplenty:dead_forest",
"biomesoplenty:dead_swamp",
"biomesoplenty:wasteland"
]
},
{
"block": "biomesoplenty:biome_block",
"size": 1,
"variation": 5,
"frequency": 1,
"min_height": 16,
"max_height": 50
}
]
}
]

Looks like it doesn't recognize the block?

Using Forge 2075, MMD OreSpawn 2.0.0.3

Fixed in 2.0.0.4, will release somewhere today.

Same error on 2.0.0.4

Then you aren't using the right id/don't have the mod installed. It works fine for me.

correct me if I am wrong but shouldn't

{
"block": "substratum:ore",
"state": "ore=niter",
"size": 7,
"variation": 4,
"frequency": 4,
"min_height": 0,
"max_height": 128
},

actually be:

{
"block": "substratum:ore",
"state": "variant=niter",
"size": 7,
"variation": 4,
"frequency": 4,
"min_height": 0,
"max_height": 128
},