Multiple crashes due to creature ragdolls?

[Deceptive Pastry]

Friend was running pure vanilla and got this crash. I later got a similar crash running Into the Abyss but with a mudraptor. There seems to be some issue with monster ragdolls and the game crashing?

Game version 0.14.9.1 (ReleaseWindows, branch release, revision df0088ca33)
Graphics mode: 3840x2160 (Fullscreen)
VSync ON
Language: English
Selected content packages: Vanilla 0.9
Level seed: Minos LineaAnnwn
Loaded submarine: R-29 (794CFA38C82CBCD88C498726872788B5)
Selected screen: Barotrauma.GameScreen
SteamManager initialized
Client (Round had started)


System info:
    Operating system: Microsoft Windows NT 10.0.19042.0 64 bit
    GPU name: NVIDIA GeForce GTX 1080
    Display mode: {Width:1920 Height:1080 Format:Color AspectRatio:1.7777778}
    GPU status: Normal


Exception: Object reference not set to an instance of an object. (System.NullReferenceException)
Target site: Void CheckDistFromCollider()
Stack trace: 
   at Barotrauma.Ragdoll.CheckDistFromCollider() in <DEV>\Barotrauma\BarotraumaShared\SharedSource\Characters\Animation\Ragdoll.cs:line 1662
   at Barotrauma.Ragdoll.Update(Single deltaTime, Camera cam) in <DEV>\Barotrauma\BarotraumaShared\SharedSource\Characters\Animation\Ragdoll.cs:line 1110
   at Barotrauma.Ragdoll.UpdateAll(Single deltaTime, Camera cam) in <DEV>\Barotrauma\BarotraumaShared\SharedSource\Characters\Animation\Ragdoll.cs:line 902
   at Barotrauma.GameScreen.Update(Double deltaTime) in <DEV>\Barotrauma\BarotraumaShared\SharedSource\Screens\GameScreen.cs:line 277
   at Barotrauma.GameMain.Update(GameTime gameTime) in <DEV>\Barotrauma\BarotraumaClient\ClientSource\GameMain.cs:line 962
   at Microsoft.Xna.Framework.Game.DoUpdate(GameTime gameTime) in <DEV>\Libraries\MonoGame.Framework\Src\MonoGame.Framework\Game.cs:line 656
   at Microsoft.Xna.Framework.Game.Tick() in <DEV>\Libraries\MonoGame.Framework\Src\MonoGame.Framework\Game.cs:line 500
   at Microsoft.Xna.Framework.SdlGamePlatform.RunLoop() in <DEV>\Libraries\MonoGame.Framework\Src\MonoGame.Framework\SDL\SDLGamePlatform.cs:line 92
   at Microsoft.Xna.Framework.Game.Run(GameRunBehavior runBehavior) in <DEV>\Libraries\MonoGame.Framework\Src\MonoGame.Framework\Game.cs:line 397
   at Microsoft.Xna.Framework.Game.Run() in <DEV>\Libraries\MonoGame.Framework\Src\MonoGame.Framework\Game.cs:line 367
   at Barotrauma.Program.Main(String[] args) in <DEV>\Barotrauma\BarotraumaClient\ClientSource\Program.cs:line 58


Last debug messages:
[9/21/2021 10:02:14 PM] Attempted to check the validity of a potentially removed ragdoll. Character: Tigerthresher, id: 2139, removed: False, ragdoll removed: False
[9/21/2021 10:02:14 PM] Failed to read event for entity "EntitySpawner"! {[RagdollParams] Failed to load ragdoll Tigerthresher Default Ragdoll from Content/Characters/Tigerthresher/Ragdolls/TigerthresherDefaultRagdoll.xml for the character Tigerthresher.}
   at Barotrauma.RagdollParams.GetRagdollParams[T](String speciesName, String fileName) in <DEV>\Barotrauma\BarotraumaShared\SharedSource\Characters\Params\Ragdoll\RagdollParams.cs:line 187
   at Barotrauma.FishAnimController.get_FishRagdollParams() in <DEV>\Barotrauma\BarotraumaShared\SharedSource\Characters\Animation\FishAnimController.cs:line 31
   at Barotrauma.Ragdoll..ctor(Character character, String seed, RagdollParams ragdollParams) in <DEV>\Barotrauma\BarotraumaShared\SharedSource\Characters\Animation\Ragdoll.cs:line 414
   at Barotrauma.Character..ctor(CharacterPrefab prefab, String speciesName, Vector2 position, String seed, CharacterInfo characterInfo, UInt16 id, Boolean isRemotePlayer, RagdollParams ragdollParams) in <DEV>\Barotrauma\BarotraumaShared\SharedSource\Characters\Character.cs:line 1157
   at Barotrauma.Character.Create(String speciesName, Vector2 position, String seed, CharacterInfo characterInfo, UInt16 id, Boolean isRemotePlayer, Boolean hasAi, Boolean createNetworkEvent, RagdollParams ragdoll) in <DEV>\Barotrauma\BarotraumaShared\SharedSource\Characters\Character.cs:line 989
   at Barotrauma.Character.ReadSpawnData(IReadMessage inc) in <DEV>\Barotrauma\BarotraumaClient\ClientSource\Characters\CharacterNetworking.cs:line 481
   at Barotrauma.EntitySpawner.ClientRead(ServerNetObject type, IReadMessage message, Single sendingTime) in <DEV>\Barotrauma\BarotraumaClient\ClientSource\Networking\EntitySpawner.cs:line 37
   at Barotrauma.Networking.ClientEntityEventManager.Read(ServerNetObject type, IReadMessage msg, Single sendingTime, List`1 entities) in <DEV>\Barotrauma\BarotraumaClient\ClientSource\Networking\NetEntityEvent\ClientEntityEventManager.cs:line 239
[9/21/2021 10:02:14 PM] Failed to spawn character Tigerthresher {[RagdollParams] Failed to load ragdoll Tigerthresher Default Ragdoll from Content/Characters/Tigerthresher/Ragdolls/TigerthresherDefaultRagdoll.xml for the character Tigerthresher.}
   at Barotrauma.RagdollParams.GetRagdollParams[T](String speciesName, String fileName) in <DEV>\Barotrauma\BarotraumaShared\SharedSource\Characters\Params\Ragdoll\RagdollParams.cs:line 187
   at Barotrauma.FishAnimController.get_FishRagdollParams() in <DEV>\Barotrauma\BarotraumaShared\SharedSource\Characters\Animation\FishAnimController.cs:line 31
   at Barotrauma.Ragdoll..ctor(Character character, String seed, RagdollParams ragdollParams) in <DEV>\Barotrauma\BarotraumaShared\SharedSource\Characters\Animation\Ragdoll.cs:line 414
   at Barotrauma.Character..ctor(CharacterPrefab prefab, String speciesName, Vector2 position, String seed, CharacterInfo characterInfo, UInt16 id, Boolean isRemotePlayer, RagdollParams ragdollParams) in <DEV>\Barotrauma\BarotraumaShared\SharedSource\Characters\Character.cs:line 1157
   at Barotrauma.Character.Create(String speciesName, Vector2 position, String seed, CharacterInfo characterInfo, UInt16 id, Boolean isRemotePlayer, Boolean hasAi, Boolean createNetworkEvent, RagdollParams ragdoll) in <DEV>\Barotrauma\BarotraumaShared\SharedSource\Characters\Character.cs:line 989
   at Barotrauma.Character.ReadSpawnData(IReadMessage inc) in <DEV>\Barotrauma\BarotraumaClient\ClientSource\Characters\CharacterNetworking.cs:line 481
[9/21/2021 10:02:14 PM] Couldn't load xml document "Content/Characters/Tigerthresher/Ragdolls/TigerthresherDefaultRagdoll.xml"! {The process cannot access the file 'C:\SteamLibrary\steamapps\common\Barotrauma\Content\Characters\Tigerthresher\Ragdolls\TigerthresherDefaultRagdoll.xml' because it is being used by another process.}
   at System.IO.FileStream.ValidateFileHandle(SafeFileHandle fileHandle)
   at System.IO.FileStream.CreateFileOpenHandle(FileMode mode, FileShare share, FileOptions options)
   at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options)
   at Barotrauma.IO.File.Open(String path, FileMode mode, FileAccess access) in <DEV>\Barotrauma\BarotraumaShared\SharedSource\Utils\SafeIO.cs:line 329
   at Barotrauma.XMLExtensions.TryLoadXml(String filePath) in <DEV>\Barotrauma\BarotraumaShared\SharedSource\Serialization\XMLExtensions.cs:line 69

[Dynamoon]

Hi! Without going into the technical specifics as those aren't my expertise, I believe your crashes were likely related to a known issue, which will be addressed in the next update.

If you'd like to, you can read more about the issue here: https://github.com/Regalis11/Barotrauma/issues/6627