Under Tangled Boughs

I would love to see this mod updated, or if you wish to pass on the mod, please post your source. 

This is one of my favorite mods. 

12.5.2026 23:43:53 [Error] [undertangledboughs] An exception was thrown when trying to start the mod:
12.5.2026 23:43:53 [Error] [undertangledboughs] Exception: Could not load type 'Vintagestory.ServerMods.TreeGen' from assembly 'VSSurvivalMod, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'.
   at MonoMod.Core.Interop.CoreCLR.V60.InvokeCompileMethod(IntPtr functionPtr, IntPtr thisPtr, IntPtr corJitInfo, CORINFO_METHOD_INFO* methodInfo, UInt32 flags, Byte** nativeEntry, UInt32* nativeSizeOfCode)
   at MonoMod.Core.Platforms.Runtimes.Core60Runtime.JitHookDelegateHolder.CompileMethodHook(IntPtr jit, IntPtr corJitInfo, CORINFO_METHOD_INFO* methodInfo, UInt32 flags, Byte** nativeEntry, UInt32* nativeSizeOfCode)
   at UnderTangledBoughs.Util.HarmonyPatches.TreeGenPatch.Execute(Harmony harmony) in C:\Users\vinte\source\repos\UnderTangledBoughs\UnderTangledBoughs\Util\HarmonyPatches\TreeGenPatch.cs:line 13
   at UnderTangledBoughs.Util.HarmonyPatches.TreeGenPatch.Execute(Harmony harmony) in C:\Users\vinte\source\repos\UnderTangledBoughs\UnderTangledBoughs\Util\HarmonyPatches\TreeGenPatch.cs:line 13
   at UnderTangledBoughs.Util.HarmonyPatches.HarmonyModSystem.StartServerSide(ICoreServerAPI api) in C:\Users\vinte\source\repos\UnderTangledBoughs\UnderTangledBoughs\Util\HarmonyPatches\HarmonyModSystem.cs:line 27
   at Vintagestory.Common.ModLoader.TryRunModPhase(Mod mod, ModSystem system, ICoreAPI api, ModRunPhase phase) in VintagestoryLib\Common\API\ModLoader.cs:line 680
12.5.2026 23:43:53 [Error] Failed to start system UnderTangledBoughs.Util.HarmonyPatches.HarmonyModSystem

BlueRazzFox It works with wilderlands for sure. Those mods just edit tree size, while this mod adds to the trees, so they don't conflict

This might be a silly question, but is this compatible with mods that change the shape/size of trees at worldgen, like Lakul's Enhanced Vanilla Trees and Wilderlands Forests? I love the idea of the tree hollows and stumps on these more aesthetically pleasing trees.

Hi, the mod is broken for the new 1.22 can you please update it ? :c <3

Actually it is not all trees. I chopped a poplar with a stump and it was correclty tied to the rest of the tree. It seems Birch, Oak, and possibly Pine are affected. will test out further. 

Stumps it seems have extremely low durability compared to the rest of the tree. As well, when downing the stump at the bottom of a tree it will not knock the whole tree down. So to cut a tree, i have to aim one block above the stump. 

Two questions about the tree hollows; firstly, do they refill over time? Secondly, is it possible to get them as a drop when cutting down trees?

Vinter_Nacht - or anyone who noticed that the mods compatibility folders aren't implemented correctly, which explains the wierdness when ANY compatible mods are installed.

Here's how to fix:

assets -> wildcrafttree -> compatibility -> wildcrafttree -> stuff <--- Incorrect (Current)

assets -> wildcrafttree -> compatibility -> wildcrafttree -> stuff <--- Correct

Since, as i can see, you're only adding textures and blocktypes.

As for the lang files:

assets -> undertangledboughs -> compatibility -> floralzones(any/all) -> lang -> en(es/fr/etc.).json

would be the correct assortment, better to copy floralzones' lang files and make necessary additions there.

Edit: after fixing the folder structure, the game crashes at startup.

12/14/2025 11:22:35 PM: Critical error occurred
Loaded Mods: undertangledboughs@1.0.5, game@1.21.6, creative@1.21.6, survival@1.21.6
System.NullReferenceException: Object reference not set to an instance of an object.
   at Vintagestory.Common.InventoryPlayerCreative.GatherTabStacks(CollectibleObject[] collectibles) in VintagestoryLib\Common\GameContent\Inventory\InventoryPlayerCreative.cs:line 182
   at Vintagestory.Common.InventoryPlayerCreative.UpdateFromWorld(IWorldAccessor world) in VintagestoryLib\Common\GameContent\Inventory\InventoryPlayerCreative.cs:line 116
   at Vintagestory.Common.CreativeNetworkUtil.UpdateFromPacket(IWorldAccessor world, Packet_InventoryContents packet) in VintagestoryLib\Common\GameContent\Inventory\InventoryPlayerCreative.cs:line 33
   at Vintagestory.Client.NoObf.ClientPlayer.AddOrUpdateInventory(ClientMain game, Packet_InventoryContents packet) in VintagestoryLib\Client\Model\ClientPlayer.cs:line 139
   at Vintagestory.Client.NoObf.ClientPlayer.UpdateFromPacket(ClientMain game, Packet_PlayerData packet) in VintagestoryLib\Client\Model\ClientPlayer.cs:line 161
   at Vintagestory.Client.NoObf.GeneralPacketHandler.HandlePlayerData(Packet_Server packet) in VintagestoryLib\Client\Systems\GeneralPacketHandler.cs:line 261
   at Vintagestory.Client.NoObf.ProcessPacketTask.ProcessPacket(Packet_Server packet) in VintagestoryLib\Client\Systems\ProcessPacketTask.cs:line 18
   at Vintagestory.Client.NoObf.ProcessPacketTask.Run() in VintagestoryLib\Client\Systems\ProcessPacketTask.cs:line 12
   at Vintagestory.Client.NoObf.ClientMain.ExecuteMainThreadTasks(Single deltaTime) in VintagestoryLib\Client\ClientMain.cs:line 786
   at Vintagestory.Client.GuiScreenConnectingToServer.RenderToDefaultFramebuffer(Single dt) in VintagestoryLib\Client\MainMenu\Screens\GuiScreenConnectingToServer.cs:line 298
   at Vintagestory.Client.ScreenManager.Render(Single dt) in VintagestoryLib\Client\ScreenManager.cs:line 760
   at Vintagestory.Client.ScreenManager.OnNewFrame(Single dt) in VintagestoryLib\Client\ScreenManager.cs:line 663
   at Vintagestory.Client.NoObf.ClientPlatformWindows.window_RenderFrame(FrameEventArgs e) in VintagestoryLib\Client\ClientPlatform\GameWindow.cs:line 112
   at OpenTK.Windowing.Desktop.GameWindow.Run()
   at Vintagestory.Client.ClientProgram.Start(ClientProgramArgs args, String[] rawArgs) in VintagestoryLib\Client\ClientProgram.cs:line 347
   at Vintagestory.Client.ClientProgram.<>c__DisplayClass10_0.<.ctor>b__1() in VintagestoryLib\Client\ClientProgram.cs:line 131
   at Vintagestory.ClientNative.CrashReporter.Start(ThreadStart start) in VintagestoryLib\Client\ClientPlatform\ClientNative\CrashReporter.cs:line 95

Is this compatible with Wildcraft trees?

Vinter_Nacht Hello, sorry I didn't saw your answer to my previous comment : "Please allow us to change the translation. It's easy to do."

I am French and then use the game in French but "Stump" isn't translated, in French this is called "Souche" and if you translate it it doesn't look like "Pin Souche", it's reversed (because French use a lot of reversed things compared to english in how the sentences are made) so for example in French it should be : "Souche de Pin" (If 100% translated in English it mean : "Stump of Pin" lol), so idk if you can translate this for every trees and even modded trees or if you can put a "lang" file in your mod so I can translate it for you and can send it to you on Discord for you to put it in an update of the mod or whatever you prefer ! Would be cool thx ! <3

I am beting it is a bug where chopping the trunk doesn't down the tree however would I like to see it re-added as a config option. Because me and a friend quite like it 😅

Dirty_Wizard it is in the latest release, but not the trunks, you gotta mine the block above, then the trunk after

Dirty_Wizard - As far as I know. It's worth checking in with SaltyWater though!  Might need additional checks for the hollow and stump.

Would this be compatible with Salty's Falling Trees?

Latest update seems to have fixed my issue with the forests, thanks for the quick update!

Could you add Boughs as a resouce from evergreen trees and add recipies to make roofs out of them? Thanks!

koimeiji Sounds like I need to crack into it today to see if I can pin down the "something weird happening"

Getting the same issue with forests not generating other than near spawn, and the forest that did generate was...well, let's just say it's a good thing I don't have trypophobia, because every tree was absolutely covered in tree hollows.

I am not running rivergen; only worldgen mods I have are Geology Additions and Rock Strata Variety.

World content mods (ie flora, trees, etc) would be Floral Zones (Cosmopolitian and Asiatic), Better Ruins/Traders, and Mycodiversity.

1.21.1 with mod version 1.0.4

Worldgen log snippet if it helps

26.9.2025 18:07:07 [Worldgen] An error was thrown in pass Vegetation when generating chunk column X=15986,Z=15973 in world 'test' with seed 1578432107
Exception System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection. (Parameter 'index')
   at System.Collections.Generic.List`1.get_Item(Int32 index)
   at UnderTangledBoughs.Util.WorldGen.ForestEmbellishment.PlaceTreeHollow(IBlockAccessor blockAccessor, BlockPos pos)
   at UnderTangledBoughs.Util.WorldGen.ForestEmbellishment.NewChunkStumpAndHollowGen(Dictionary`2 treeBaseDict, IBlockAccessor ba, Boolean isWideTrunk)
   at UnderTangledBoughs.Util.WorldGen.TreeGenComplete.OnTreeGenComplete(Dictionary`2 treeBaseDict, IWorldGenBlockAccessor ba, Boolean isWideTrunk)
   at UnderTangledBoughs.Util.HarmonyPatches.HarmonyModSystem.growTreePostfix()
   at Vintagestory.ServerMods.GenVegetationAndPatches.genShrubs(Int32 chunkX, Int32 chunkZ) in C:\Users\Tyron\Documents\vintagestory\game\VSSurvivalMod\Systems\WorldGen\Standard\ChunkGen\8.GenVegetationAndPatches\GenVegetationAndPatches.cs:line 418
   at Vintagestory.ServerMods.GenVegetationAndPatches.OnChunkColumnGen(IChunkColumnGenerateRequest request) in C:\Users\Tyron\Documents\vintagestory\game\VSSurvivalMod\Systems\WorldGen\Standard\ChunkGen\8.GenVegetationAndPatches\GenVegetationAndPatches.cs:line 252
   at Vintagestory.Server.ServerSystemSupplyChunks.runGenerators(ChunkColumnLoadRequest chunkRequest, Int32 forPass) in C:\Users\Tyron\Documents\vintagestory\game\VintagestoryLib\Server\Systems\World\LoadThread\SupplyChunks.cs:line 1878

MrFastZombie - That's weird as hell.  Contrary to appearances, I don't actually touch worldGen directly at all.  The mod only goes into effect when the trees are placed. I'm really curious how the two are interacting that's causing this.  I'll have to see if I can suss it out.

I was testing out world gen mods and I noticed that I was having a very hard time finding forests beyond the spawn. I think using this and either Rivergen or the River mod causes forests to have some issues on 1.21.2-RC2 (I didn't test on 1.21.1, so unknown if it's new with 1.21.2 or not).

I've put together an imgur album that shows some examples of the issue: https://imgur.com/a/VKlKezp

Potentially related server-worldgen.log error:

26.9.2025 04:04:31 [Worldgen] An error was thrown in pass Vegetation when generating chunk column X=16033,Z=16000 in world 'EHJKLFBUIOHJKLWERFG' with seed 857874169
Exception System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection. (Parameter 'index')
   at System.Collections.Generic.List`1.get_Item(Int32 index)
   at UnderTangledBoughs.Util.WorldGen.ForestEmbellishment.PlaceTreeHollow(IBlockAccessor blockAccessor, BlockPos pos)
   at UnderTangledBoughs.Util.WorldGen.ForestEmbellishment.NewChunkStumpAndHollowGen(Dictionary`2 treeBaseDict, IBlockAccessor ba, Boolean isWideTrunk)
   at UnderTangledBoughs.Util.WorldGen.TreeGenComplete.OnTreeGenComplete(Dictionary`2 treeBaseDict, IWorldGenBlockAccessor ba, Boolean isWideTrunk)
   at UnderTangledBoughs.Util.HarmonyPatches.HarmonyModSystem.growTreePostfix()
   at Vintagestory.ServerMods.GenVegetationAndPatches.genTrees(Int32 chunkX, Int32 chunkZ) in C:\Users\Tyron\Documents\vintagestory\game\VSSurvivalMod\Systems\WorldGen\Standard\ChunkGen\8.GenVegetationAndPatches\GenVegetationAndPatches.cs:line 500
   at Vintagestory.ServerMods.GenVegetationAndPatches.OnChunkColumnGen(IChunkColumnGenerateRequest request) in C:\Users\Tyron\Documents\vintagestory\game\VSSurvivalMod\Systems\WorldGen\Standard\ChunkGen\8.GenVegetationAndPatches\GenVegetationAndPatches.cs:line 253
   at Vintagestory.Server.ServerSystemSupplyChunks.runGenerators(ChunkColumnLoadRequest chunkRequest, Int32 forPass) in C:\Users\Tyron\Documents\vintagestory\game\VintagestoryLib\Server\Systems\World\LoadThread\SupplyChunks.cs:line 1907

EDIT: Issue seems to only happen with UTB 1.0.4 and not 1.0.2.

EDIT: Just realized there is a github issue tracker, I've made an issue so it's easier to track.

Does primitive survival's burrows cancel out with these burrows? Or they cancel out each other? 🤔

Please allow us to change the translation. It's easy to do.

Absolutely beautiful mod.

Hi, thx for you mod, I really like it !!! But can you please add a lang file for "Stump" and all, so we can trad it in our language ? Thx ! ^^

Wildcraft's young birches and possibly other thin trees appear incompatible - they aren't gaining features and no longer fell properly

Hello! It looks like the European yew stump 

from the Floral Zones Mediterranean Pack is missing its stump texture.

Hi, thx for you mod, I really like it !!! But can you please add a lang file for "Stump" and all, so we can trad it in our language ? Thx ! ^^

Thricelight - There are some concerns with this, yes. First - All the stumps and hollows would turn into unknown blocks. All hollows would lose their contents, whether they're on a tree or have been placed. Burls would also turn into white blocks. While the stump and burls would restore normally, the hollows would (at best) reappear with no contents, and (at worst) would be broken in general. They may appear as hollows, but not have inventories at all.  But that's the worst of it.

Trying to track down some issues with possible mod conflicts. I love this mod, but would it have serious consequences to my world if I was to de-activate Under Tangled Boughs temporarily?

Mollycoddle - As the conquest pack is a texture pack, that's clearly a mod conflict issue.  I may try to see if compatibility can be achieved, but I first have to see where the issue lies.

I combined the Wildcraft Trees thing with the Conquest textures and this, and now every Wildcraft Tree Stump has no texture and is a purple/black block that cannot be harvested. It's a bit distracting.

Seems to lack the red cedar tree from Wildcraft.

Ejooj - Only in newly generated chunks, the original chunks will remain without.

Does the stumps get added to existing trees and saves?

Magritor - I just want you to know your post was perfectly understandable. I just didn't do a very good job of saying "I don't expect to see any bugs/errors".  You didn't imply any bugs.

Vinter_Nacht Sorry for the word “bug” I'm French and I made a mistake during my translation into English ^^”
it was more in the sense that I didn't see any noticeable problems during the test ^^

Sinemu - Nope, and that's one I won't be trying to get compatibility with.  I've worked with it before, and it's not really feasible without some serious footwork.
oneil - It will only generate on newly generated trees.

How does this mod work with Wild Farming - Revival?

Immersive! I loved it! Thanks for all the work!

hi sorry again ! how does it behave on an existing world ? will it spawn on new tree or old trees are affected ? thanks again for those great mods ! 

Wow what a gorgeous addition!

Magritor - It was tested amongst my patrons for about a couple of weeks first, so I'm not anticipating any bugs... But that's how they get ya. 

Works well for now. I had no problems during my exploration and the rendering is perfect ^^