#[VAS-9227] Guest player crash (game closes) causing loss of progress and achievements

4 messages · Page 1 of 1 (latest)

quasi plover
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Game Version: Latest version available on Epic Games Store
Platform: Windows 11
Mode: Online Multiplayer (Co-op)

Description:
During multiplayer sessions, the player who joins the host (guest player) frequently crashes. The game closes completely without warning. This issue happens in many matches under different conditions.

In the most recent case, the crash occurred when opening a treasure chest. When this happens, the guest player loses all progress made during the run, including achievements and unlock progress. Meanwhile, the host player receives or keeps all items collected during the run.

This issue appears in almost every multiplayer session depending on which player joins the server.

Last invited Player logs file :

TreasureReelUI: SpriteName LEM_ACC_SABOTEUR.png, from TextureName LEM_items - the texture is not set to readable!
UnityEngine.DebugLogHandler:Internal_Log(LogType, LogOption, String, Object)
UnityEngine.DebugLogHandler:LogFormat(LogType, Object, String, Object[])
UnityEngine.Logger:Log(LogType, Object)
UnityEngine.Debug:LogWarning(Object)
VampireSurvivors.UI.TreasureReelUI:SetWeapons(List`1)
VampireSurvivors.UI.OpenTreasurePage:OnShowStart(GameObject)
Doozy.Engine.UI.<ShowEnumerator>d__107:MoveNext()
UnityEngine.SetupCoroutine:InvokeMoveNext(IEnumerator, IntPtr)
Doozy.Engine.UI.UIView:Show(Boolean)
Doozy.Engine.UI.UIView:ExecuteShow(String, String, Boolean)
Doozy.Engine.UI.<ShowViewNextFrame>d__105:MoveNext()
UnityEngine.SetupCoroutine:InvokeMoveNext(IEnumerator, IntPtr)

03/07/2026 23:54:44 LogEOSP2P(Warning): Received packet with unknown remote socket mapping. LocalUserId=[000...c80] RemoteUserId=[000...24b] RemoteSessionRouteId=[0] Channel=[0]
03/07/2026 23:54:44 LogEOSP2P(Warning): Received packet with unknown remote socket mapping. LocalUserId=[000...c80] RemoteUserId=[000...24b] RemoteSessionRouteId=[0] Channel=[0]

quasi plover
#

Similar crash when leveling up

Last invited Player logs file :
03/08/2026 01:01:52 LogEOSP2P(Warning): Received packet with unknown remote socket mapping. LocalUserId=[000...c80] RemoteUserId=[000...24b] RemoteSessionRouteId=[0] Channel=[0]

grizzled yarrow
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Hey, can we get the full log files from both host and client please?