@ http://minecraft.curseforge.com/mc-mods/222896-pandoras-box?comment=5

java.lang.IllegalArgumentException: Cannot set property PropertyEnum{name=variant, clazz=class net.minecraft.block.BlockPlanks$EnumType, values=[acacia, dark_oak]} to oak on block minecraft:leaves2, it is not an allowed value
at net.minecraft.block.state.BlockState$StateImplementation.func_177226_a(BlockState.java:181)
at net.minecraft.block.BlockNewLeaf.func_176203_a(BlockNewLeaf.java:75)
at net.minecraft.world.gen.feature.WorldGenerator.func_175905_a(SourceFile:34)
at ivorius.pandorasbox.worldgen.WorldGenMegaJungleCustom.func_180709_b(WorldGenMegaJungleCustom.java:56)
at ivorius.pandorasbox.effects.PBEffectGenerateByGenerator.generateOnBlock(PBEffectGenerateByGenerator.java:59)
at ivorius.pandorasbox.effects.PBEffectGenerate.generateInRange(PBEffectGenerate.java:55)
at ivorius.pandorasbox.effects.PBEffectRangeBased.doEffect(PBEffectRangeBased.java:47)
at ivorius.pandorasbox.effects.PBEffectNormal.doTick(PBEffectNormal.java:61)
at ivorius.pandorasbox.entitites.EntityPandorasBox.func_70071_h_(EntityPandorasBox.java:206)