It looks like 0.7.2 is calling a client side method in IBlockAccess, maybe getBiome()
Testing was done with forge-1.12.2-14.23.1.2582

java.lang.NoSuchMethodError: net.minecraft.world.IBlockAccess.func_180494_b(Lnet/minecraft/util/math/BlockPos;)Lnet/minecraft/world/biome/Biome; at com.ferreusveritas.dynamictrees.trees.TreeOak$SpeciesSwampOak.isAcceptableSoilForWorldgen(TreeOak.java:89) at com.ferreusveritas.dynamictrees.worldgen.TreeGenerator.makeTree(TreeGenerator.java:191) at com.ferreusveritas.dynamictrees.worldgen.TreeGenerator.generateOverworld(TreeGenerator.java:119) at com.ferreusveritas.dynamictrees.worldgen.TreeGenerator.generate(TreeGenerator.java:106) at net.minecraftforge.fml.common.registry.GameRegistry.generateWorld(GameRegistry.java:167) at net.minecraft.world.chunk.Chunk.func_186034_a(Chunk.java:1016) at net.minecraft.world.chunk.Chunk.func_186030_a(Chunk.java:996) at net.minecraft.world.gen.ChunkProviderServer.func_186025_d(ChunkProviderServer.java:157) at net.minecraft.server.MinecraftServer.func_71222_d(MinecraftServer.java:344) at net.minecraft.server.MinecraftServer.func_71247_a(MinecraftServer.java:314) at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:270) at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:484) at java.lang.Thread.run(Thread.java:748)

Why in hell is this function client side only? (Rhetorical question). I'm going to change the IBlockAccess to World.

Also.. how did this get past weeks worth of alpha testing? FFS.

yeah it seems a very strange method to be client only

I just submitted the new builds on curseforge for 0.7.2b. It should work though I didn't test it thoroughly.