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java.lang.NullPointerException at gregtech.common.blocks.GT_Block_GeneratedOres.setOreBlock(GT_Block_GeneratedOres.java:106) at gregtech.common.GT_Worldgen_GT_Ore_SmallPieces.executeWorldgen(GT_Worldgen_GT_Ore_SmallPieces.java:57) at gregtech.common.GT_Worldgenerator.generateInternal(GT_Worldgenerator.java:95) at gregtech.common.GT_Worldgenerator.generate(GT_Worldgenerator.java:54) at net.minecraftforge.fml.common.registry.GameRegistry.generateWorld(GameRegistry.java:120) at net.minecraft.world.chunk.Chunk.func_186034_a(Chunk.java:1001) at net.minecraft.world.chunk.Chunk.func_186030_a(Chunk.java:983) at net.minecraft.world.gen.ChunkProviderServer.func_186025_d(ChunkProviderServer.java:154) at net.minecraft.world.World.func_72964_e(World.java:303) at net.minecraft.world.World.func_175726_f(World.java:298) at net.minecraft.world.World.func_180495_p(World.java:842) at net.minecraft.world.World.func_180496_d(World.java:515) at net.minecraft.world.World.func_175685_c(World.java:466) at net.minecraft.world.World.func_175722_b(World.java:423) at net.minecraft.world.World.markAndNotifyBlock(World.java:368) at net.minecraft.world.World.func_180501_a(World.java:349) at net.minecraft.world.World.func_175656_a(World.java:408) at gregtech.common.GT_Worldgen_Stone.executeWorldgen(GT_Worldgen_Stone.java:78) at gregtech.common.GT_Worldgenerator.generateInternal(GT_Worldgenerator.java:95) at gregtech.common.GT_Worldgenerator.generate(GT_Worldgenerator.java:54) at net.minecraftforge.fml.common.registry.GameRegistry.generateWorld(GameRegistry.java:120) at net.minecraft.world.chunk.Chunk.func_186034_a(Chunk.java:1001) at net.minecraft.world.chunk.Chunk.func_186030_a(Chunk.java:983) at net.minecraft.world.gen.ChunkProviderServer.func_186025_d(ChunkProviderServer.java:154) at net.minecraft.server.MinecraftServer.func_71222_d(MinecraftServer.java:298) at net.minecraft.server.integrated.IntegratedServer.func_71247_a(IntegratedServer.java:106) at net.minecraft.server.integrated.IntegratedServer.func_71197_b(IntegratedServer.java:120) at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:431) at java.lang.Thread.run(Thread.java:745)