help Fjordur map crashing Assertion Error

[Todouch]

Hello everyone, I have a problem with Assertion Failed error on my Fjordur world and can't find any solution that would work for me. This is my last try to fix my world before resetting it and starting over again. I tried to post this on steam forum but I'm limited user (didn't buy anything - I can't add friends or make new threads in forum, etc.)

I tried:
Verifying game's folders on steam, run steam as administrator, reinstall Ark (took nearly 15 hours), reinstall steam (deleting all its folders except "steam.exe" and "steamapps" folder), open Ark directly from its folder... I think thats all

Recently I had a few issues with my graphics drivers, but I reinstalled them several times and Ark was functioning. Note that it crashed a few times, along with whole computer, but that was caused by the graphic drivers. Last time it crashed, I reinstalled it again and after that Fjordur stopped working. I can access any other map and it works fine, maybe something went wrong during the crash and saved with error, I don't know.

It says something about lost island map, I had 2 sinomacrops and 2 rhyniognathas tamed for some time and nothing happened.

Here's my crash report:

The UE4-ShooterGame Game has crashed and will close

Assertion failed: Actuallndex >= 0 [File:F:\build\Lostlsland Engine\Source\Runtime\CoreUObject\Private\Object\WorldSerializedObject.cpp] [Line: 128]

VERSION: 358.7

KERNELBASE.dll!UnknownFunction (0x00007ffd17454c3c) + 0 bytes [UnknownFile:0] ShooterGame.exe!FOutputDevice::Logf__VA) (0x00007ff7ef41edc8) + 159 bytes [f:\build\lostisland\engine\source\runtime\core\private\misc\output device.cpp:145]

ShooterGame.exe!FDebug::AssertFailed) (0x00007ff7ef40bad8) + 117 bytes [f:\build\lostisland\engine\source\runtime\core\private\misc\outputdevice.cpp:220] ShooterGame.exe!FSaveFileObjectReader::operator<<0) (0x00007ff7ef4db7ea) + 0 bytes [f:\build\lostisland\engine\source\runtime\coreuobject\private\uobject\worldserializedobject.cpp:130]

ShooterGame.exe:operator<<0) (0x00007ff7ef4791df) + 0 bytes [f:\build\lostisland\engine\source\runtime\coreuobject\public\uobject\propertytag.h:74]

ShooterGame.exe!UStruct::SerializeTagged Properties() (0x00007ff7ef4aa9b2) + 0 bytes [f:\build\lostisland\engine\source\runtime\coreuobject\private\uobject\class.cpp:757] ShooterGame.exe!UObject::SerializeScriptProperties() (0x00007ff7ef4d0fff) + 0 bytes [f:\build\lostisland\engine\source\runtime\coreuobject\private\uobject\obj.cpp:1065]

ShooterGame.exe!UObject::Serialize() (0x00007ff7ef4cff37) + 0 bytes [f:\build\lostisland\engine\source\runtime\coreuobject\private\uobject\obj.cpp:1023]

ShooterGame.exe!Alnstanced FoliageActor::Serialize() (0x00007ff7efc1ce7a) + 0 bytes [f:\build\lostisland\engine\source\runtime\engine\private instancedfoliage.cpp:2503] ShooterGame.exe!WorldSerializedObject::SerializeObjectData() (0x00007ff7ef4e7de3) + 0 bytes

[f:\build\lostisland\engine\source\runtime\coreuobject\private\uobject\worldserializedobject.cpp:703]

ShooterGame.exe!UWorld::LoadFromFile() (0x00007ff7efe8127d) + 0 bytes [f:\build\lostisland\engine\source\runtime\engine\private\world.cpp:6892] ShooterGame.exe!AShooterGameMode::LoadWorld() (0x00007ff7ee1f8d47) + 2606 bytes [f:\build\lostisland\projects\shootergame\source\shootergame\private\shootergamemode.cpp:2754]

ShooterGame.exe!UWorld::InitializeActorsForPlay) (0x00007ff7efe7e7c8) + 43 bytes [f:\build\lostisland\engine\source\runtime\engine\private\world.cpp:3243] ShooterGame.exe!UEngine::LoadMap) (0x00007ff7efe4275e) + 0 bytes [f:\build\lostisland\engine\source\runtime\engine\private\unrealengine.cpp:10374]

ShooterGame.exe!AShooterGameMode::InitGame0) (0x00007ff7ee1a9e92) + 0 bytes [f:\build\lostisland\projects\shootergame\source\shootergame\private\shootergamemode.cpp:1525] ShooterGame.exe!UEngine::Browse() (0x00007ff7efe23001) + 43 bytes [f:\build\lostisland\engine\source\runtime\engine\private\unreal engine.cpp:9028] ShooterGame.exe!UEngine::TickWorldTravel) (0x00007ff7efe574de) + 60 bytes [f:\build\lostisland\engine\source\runtime\engine\private\unrealengine.cpp:9200]

ShooterGame.exe!UGameEngine::Tick() (0x00007ff7efbe1e25) + 0 bytes [f:\build\lostisland\engine\source\runtime\engine\private\game engine.cpp:1168]

ShooterGame.exe!FEngineLoop::Tick) (0x00007ff7ed3f59b4) + 0 bytes [f:\build\lostisland\engine\source\runtime\launch\private\launchengineloop.cpp:2647] ShooterGame.exe!Guarded Main() (0x00007ff7ed3f0a2c) + 0 bytes [f:\build\lostisland\engine\source\runtime\launch\private\launch.cpp:140]

ShooterGame.exe!Guarded MainWrapper0) (0x00007ff7ed3f0a7a) +5 bytes [f:\build\lostisland\engine\source\runtime\launch\private\windows\launchwindows.cpp:125] ShooterGame.exe!WinMain) (0x00007ff7ed3f62bc) + 17 bytes [f:\build\lostisland\engine\source\runtime\launch\private\windows\launchwindows.cpp:213]

ShooterGame.exe!_tmain CRT Startup() (0x00007ff7f0c82405) + 21 bytes [f:\dd\vctools\crt\crtw32\dllstuff\crtexe.c:618]

KERNEL32.DLL!UnknownFunction (0x00007ffd19bb26ad) + 0 bytes [UnknownFile:0] ntdll.dll!UnknownFunction (0x00007ffd1a06aa68) + 0 bytes [UnknownFile:0]

ntdll.dll!UnknownFunction (0x00007ffd1a06aa68) + 0 bytes [UnknownFile:0]

Here are my mods in order (after reinstall):

Dino Storage V2
Ark Additions : The Collection!
Immersive Taming
Creature Finder Deluxe
Immersive Flight (Reborn) (Edited)

And this is copied from steam -> help -> system information :

Computer Information:
 Manufacturer: Gigabyte Technology Co., Ltd.
 Model: B550 GAMING X V2
 Form Factor: Desktop
 No Touch Input Detected
Processor Information:
 CPU Vendor: AuthenticAMD
 CPU Brand: AMD Ryzen 5 5600X 6-Core Processor
 CPU Family: 0x19
 CPU Model: 0x21
 CPU Stepping: 0x2
 CPU Type: 0x0
 Speed: 3693 MHz
 12 logical processors
 6 physical processors
 Hyper-threading: Supported
 FCMOV: Supported
 SSE2: Supported
 SSE3: Supported
 SSSE3: Supported
 SSE4a: Supported
 SSE41: Supported
 SSE42: Supported
 AES: Supported
 AVX: Supported
 AVX2: Supported
 AVX512F: Unsupported
 AVX512PF: Unsupported
 AVX512ER: Unsupported
 AVX512CD: Unsupported
 AVX512VNNI: Unsupported
 SHA: Supported
 CMPXCHG16B: Supported
 LAHF/SAHF: Supported
 PrefetchW: Unsupported
Operating System Version:
 Windows 11 (64 bit)
 NTFS: Supported
 Crypto Provider Codes: Supported 311 0x0 0x0 0x0
Video Card:
 Driver: Radeon (TM) RX 570 Graphics
 DirectX Driver Name: aticfx32.dll
 Driver Version: 31.0.21029.6002
 DirectX Driver Version: 31.0.21029.6002
 Driver Date: 8 17 2023
 OpenGL Version: 4.6
 Desktop Color Depth: 32 bits per pixel
 Monitor Refresh Rate: 60 Hz
 DirectX Card: Radeon (TM) RX 570 Graphics
 VendorID: 0x1002
 DeviceID: 0x67df
 Revision: 0xcf
 Number of Monitors: 1
 Number of Logical Video Cards: 1
 No SLI or Crossfire Detected
 Primary Display Resolution: 1680 x 1050
 Desktop Resolution: 1680 x 1050
 Primary Display Size: 19.29" x 12.60" (23.03" diag), 49.0cm x 32.0cm (58.5cm diag)
 Primary Bus Type Not Detected
 Primary VRAM Not Detected
 Supported MSAA Modes: 2x 4x 8x
Sound card:
 Audio device: Reproduktory (Realtek(R) Audio)
Memory:
 RAM: 32672 Mb
VR Hardware:
 VR Headset: None detected
Miscellaneous:
 UI Language: English
 Media Type: Undetermined
 Total Hard Disk Space Available: 2020880 MB
 Largest Free Hard Disk Block: 766591 MB
 OS Install Date:   j 05 2022
 Game Controller: None detected
 MAC Address hash: f1bc00469600e9acf1af34e6cba87d2fed24feef
Storage:
 Disk serial number hash: e4d0043b
 Number of SSDs: 0
 Number of HDDs: 0
 Number of removable drives: 0