Vintage Story Mod DB · Vintage Story mod
SendPlayerPositionPacketFix
Fixes the following error that cause client crashes usually when you log in while being mounted on an elk. This harmony patch just ignores the exception. System.ArgumentException: Position is not a number at Vintagestory.Client.NoObf.NetworkAPI.SendPlayerPosi
Quick answer
Which SendPlayerPositionPacketFix release should I use?
SendPlayerPositionPacketFix 1.0.0 targets 1.20.12. It must be installed on the client. Installation on the dedicated server is optional. No extra mods listed for this file.
Where it goes
Is SendPlayerPositionPacketFix required on the client, server, or both?
It must be installed on the client. Installation on the dedicated server is optional.
This release supports both sides, but the source does not require it on the server.
What else does SendPlayerPositionPacketFix 1.0.0 need?
1.0.0. Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add SendPlayerPositionPacketFix without breaking your instance.
Built for SendPlayerPositionPacketFix 1.0.0. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 1.0.0. It targets 1.20.12; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
It must be installed on the client. Installation on the dedicated server is optional.
- 04
Pick the file you checked
Use the “Get this file” button beside 1.0.0. It opens that exact file at the source.
About this project
What does SendPlayerPositionPacketFix add?
Fixes the following error that cause client crashes usually when you log in while being mounted on an elk. This harmony patch just ignores the exception.
System.ArgumentException: Position is not a number at Vintagestory.Client.NoObf.NetworkAPI.SendPlayerPositionPacket() in VintagestoryLib\Client\API\NetworkAPI.cs:line 240 at Vintagestory.GameContent.EntityBehaviorPlayerPhysics.OnRenderFrame(Single dt, EnumRenderStage stage) in VSEssentials\Entity\Behavior\BehaviorPlayerPhysics.cs:line 395 at Vintagestory.Client.NoObf.ClientEventManager.TriggerRenderStage(EnumRenderStage stage, Single dt) in VintagestoryLib\Client\Util\ClientEventManager.cs:line 188 at Vintagestory.Client.NoObf.ClientMain.MainRenderLoop(Single dt) in VintagestoryLib\Client\ClientMain.cs:line 825 at Vintagestory.Client.GuiScreenRunningGame.RenderToPrimary(Single dt) in VintagestoryLib\Client\MainMenu\Screens\GuiScreenRunningGame.cs:line 161 at Vintagestory.Client.ScreenManager.Render(Single dt) in VintagestoryLib\Client\ScreenManager.cs:line 695 at Vintagestory.Client.ScreenManager.OnNewFrame(Single dt) in VintagestoryLib\Client\ScreenManager.cs:line 670 at Vintagestory.Client.NoObf.ClientPlatformWindows.window_RenderFrame(FrameEventArgs e) in VintagestoryLib\Client\ClientPlatform\GameWindow.cs:line 88 at OpenTK.Windowing.Desktop.GameWindow.Run()
Only relevant for VS 1.20.12 and most likely fixed in 1.21
Project description from Vintage Story Mod DB.
Pick your setup
SendPlayerPositionPacketFix releases for each Vintage Story version.
Choose the version and loader you play, then open the matching release.
Check the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
SendPlayerPositionPacketFix versions and loaders
1.0.0
sendplayerpositionpacketfix_1.0.0.zip
27 Sept 2025
Looking for an older file? The official Vintage Story Mod DB project page is in Resources.