The latest version of Ex Nihilo Adscensio registers its chunks in the ore dictionary as ore (e.g. oreGold), but the chunks are not blocks, causing the following exception:

java.lang.NullPointerException: Ticking block entity
at vazkii.botania.common.block.subtile.functional.SubTileOrechid.onUpdate(SubTileOrechid.java:60)
at vazkii.botania.common.block.tile.TileSpecialFlower.func_73660_a(TileSpecialFlower.java:100)
at net.minecraft.world.World.func_72939_s(World.java:1804)
at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:620)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:709)
at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:387)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:613)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:471)
at java.lang.Thread.run(Thread.java:745)

I am working on a fix to check if the ore returned by OreDictionary.getOres() is a block.