Here is a log, hope its the right one. The red error on the console is below, the bold and underlined parts.
Thank you.
Initialize engine version: 2018.2.0f2 (787658998520)
Forcing GfxDevice: Direct3D 11
GfxDevice: creating device client; threaded=1
Direct3D:
Version: Direct3D 11.0 [level 11.1]
Renderer: NVIDIA GeForce GTX 1060 (ID=0x1c20)
Vendor:
VRAM: 6052 MB
Driver: 26.21.14.3064
Begin MonoManager ReloadAssembly
- Completed reload, in 0.211 seconds
<RI> Initializing input.
<RI> Input initialized.
<RI> Initialized touch support.
UnloadTime: 0.499965 ms
2019-05-11T20:37:36 0.002 INF [steamworks.NET] SteamAPI_Init() ok
2019-05-11T20:37:36 0.036 INF NET: InitCallbacks
2019-05-11T20:37:36 0.041 INF Texture quality is set to 0
2019-05-11T20:37:36 0.041 INF Precaching...
2019-05-11T20:37:36 0.045 INF Precaching file: 7DaysToDie_Data/resources.assets
2019-05-11T20:37:36 0.124 INF [EAC] Initializing ...
2019-05-11T20:37:36 0.127 INF [EAC] Initialized :: Easy Anti-Cheat successfully initialized
2019-05-11T20:37:37 0.554 INF Precaching file: 7DaysToDie_Data/sharedassets1.assets
2019-05-11T20:37:37 0.556 INF Precaching file: Data/Bundles/blocktextureatlases
2019-05-11T20:37:37 0.885 INF Precaching file: Data/Bundles/terraintextures
2019-05-11T20:37:37 0.919 INF Precaching done
2019-05-11T20:37:42 5.875 INF Loading main scene
Unloading 6 Unused Serialized files (Serialized files now loaded: 0)
UnloadTime: 2.011168 ms
2019-05-11T20:37:42 5.961 INF Awake
2019-05-11T20:37:42 5.989 WRN Setting global culture failed!
Localization language: German
(Filename: C:\buildslave\unity\build\Runtime/Export/Debug.bindings.h Line: 43)
2019-05-11T20:37:42 6.023 INF Version: Alpha 17.2 (b27) Compatibility Version: Alpha 17.2, Build: Windows 64 Bit
2019-05-11T20:37:42 6.023 INF System information:
2019-05-11T20:37:42 6.023 INF OS: Windows 10 (10.0.0) 64bit
2019-05-11T20:37:42 6.024 INF CPU: Intel® Core i7-7700HQ CPU @ 2.80GHz (cores: 8)
2019-05-11T20:37:42 6.024 INF RAM: 16270 MB
2019-05-11T20:37:42 6.024 INF GPU: NVIDIA GeForce GTX 1060 (6052 MB)
2019-05-11T20:37:42 6.024 INF Graphics API: Direct3D 11.0 [level 11.1] (shader level 5.0)
2019-05-11T20:37:42 6.024 INF Last played version: Alpha 17.2
2019-05-11T20:37:42 6.024 INF Local UTC offset: 2 hours
2019-05-11T20:37:42 6.024 WRN Setting global culture failed!
2019-05-11T20:37:42 6.030 INF Command line arguments: 7daystodie.exe -force-d3d11 -logfile D:\SteamLibrary\steamapps\common\7 Days To Die\7DaysToDie_Data\output_log__2019-05-11__20-37-23.txt
2019-05-11T20:37:42 6.031 INF Not running in Big Picture Mode, no on-screen keyboard available
2019-05-11T20:37:42 6.031 INF Starting PlayerInputManager...
2019-05-11T20:37:42 6.042 INF InControl (version 1.6.17 build 9143, native module = False, XInput = True)
Fallback handler could not load library D:/SteamLibrary/steamapps/common/7 Days To Die/7daystodie_Data/Mono/XInputInterface32
Fallback handler could not load library D:/SteamLibrary/steamapps/common/7 Days To Die/7daystodie_Data/Mono/.\XInputInterface32
Fallback handler could not load library D:/SteamLibrary/steamapps/common/7 Days To Die/7daystodie_Data/Mono/XInputInterface32
Fallback handler could not load library D:/SteamLibrary/steamapps/common/7 Days To Die/7daystodie_Data/Mono/libXInputInterface32
Fallback handler could not load library D:/SteamLibrary/steamapps/common/7 Days To Die/7daystodie_Data/Mono/.\libXInputInterface32
Fallback handler could not load library D:/SteamLibrary/steamapps/common/7 Days To Die/7daystodie_Data/Mono/libXInputInterface32
2019-05-11T20:37:42 6.116 INF Starting UserProfileManager...
2019-05-11T20:37:42 6.135 INF ApplyAllOptions current screen 1920 x 1080, 59hz, window 1920 x 1080, fullscreen True FullScreenWindow
2019-05-11T20:37:42 6.176 INF [MODS] No mods folder found
2019-05-11T20:37:42 6.190 INF Loading permissions file at 'C:\Users\emrah\AppData\Roaming/7DaysToDie/Saves/serveradmin.xml'
2019-05-11T20:37:42 6.234 INF Loading permissions file done.
2019-05-11T20:37:42 6.284 INF Awake done in 322 ms
2019-05-11T20:37:43 6.549 INF Atlas reset took 260 ms
2019-05-11T20:37:43 6.549 INF Atlas load took 265 ms
Fallback handler could not load library D:/SteamLibrary/steamapps/common/7 Days To Die/7daystodie_Data/Mono/libc
Fallback handler could not load library D:/SteamLibrary/steamapps/common/7 Days To Die/7daystodie_Data/Mono/.\libc
Fallback handler could not load library D:/SteamLibrary/steamapps/common/7 Days To Die/7daystodie_Data/Mono/libc
Unloading 9 unused Assets to reduce memory usage. Loaded Objects now: 3966.
Total: 5.561983 ms (FindLiveObjects: 0.696524 ms CreateObjectMapping: 0.135658 ms MarkObjects: 4.671089 ms DeleteObjects: 0.058347 ms)
Unloading 1 Unused Serialized files (Serialized files now loaded: 1)
Unloading 13 unused Assets to reduce memory usage. Loaded Objects now: 3966.
Total: 7.357266 ms (FindLiveObjects: 1.403988 ms CreateObjectMapping: 0.324558 ms MarkObjects: 5.565630 ms DeleteObjects: 0.062723 ms)
Unloading 0 Unused Serialized files (Serialized files now loaded: 1)
Unloading 0 unused Assets to reduce memory usage. Loaded Objects now: 3966.
Total: 5.698736 ms (FindLiveObjects: 0.562324 ms CreateObjectMapping: 0.105025 ms MarkObjects: 5.026644 ms DeleteObjects: 0.004011 ms)
2019-05-11T20:37:43 6.756 INF User joined: Aron
2019-05-11T20:37:43 6.937 INF Reloading serveradmin.xml
2019-05-11T20:37:43 6.937 INF Loading permissions file at 'C:\Users\emrah\AppData\Roaming/7DaysToDie/Saves/serveradmin.xml'
2019-05-11T20:37:43 6.938 INF Loading permissions file done.
UMA Overlay loading took 334 ms
(Filename: C:\buildslave\unity\build\Runtime/Export/Debug.bindings.h Line: 43)
UMA Slot loading took 1 ms
(Filename: C:\buildslave\unity\build\Runtime/Export/Debug.bindings.h Line: 43)
2019-05-11T20:37:45 8.704 WRN Failed loading world header file: C:\Users\emrah\AppData\Roaming\7DaysToDie\Saves\Navezgane\Emrahs Game/main.ttw
2019-05-11T20:37:45 8.704 INF Trying backup header: C:\Users\emrah\AppData\Roaming\7DaysToDie\Saves\Navezgane\Emrahs Game/main.ttw.bak
2019-05-11T20:37:45 8.704 ERR Failed loading backup header file!
2019-05-11T20:37:47 10.431 INF WorldStaticData.Init() needed 2.704s
2019-05-11T20:37:47 10.578 INF [steamworks.NET] Login ok.
2019-05-11T20:37:47 10.899 INF AchievementManager: Received stats and achievements from Steam
2019-05-11T20:37:48 12.081 WRN Failed loading world header file: C:\Users\emrah\AppData\Roaming\7DaysToDie\Saves\Navezgane\Emrahs Game/main.ttw
2019-05-11T20:37:48 12.081 INF Trying backup header: C:\Users\emrah\AppData\Roaming\7DaysToDie\Saves\Navezgane\Emrahs Game/main.ttw.bak
2019-05-11T20:37:48 12.082 ERR Failed loading backup header file!
NullReferenceException: Object reference not set to an instance of an object
at XUiC_NewContinueGame.GameModeChanged (.GameMode _newMode) [0x00000] in <filename unknown>:0
at XUiC_NewContinueGame.SavesList_OnSelectionChanged (.XUiC_ListEntry`1 _previousEntry, .XUiC_ListEntry`1 _newEntry) [0x00000] in <filename unknown>:0
at XUiC_List`1[T].OnSelectionChanged (.XUiC_ListEntry`1 _previousEntry, .XUiC_ListEntry`1 _newEntry) [0x00000] in <filename unknown>:0
at XUiC_List`1[T].set_SelectedEntry (.XUiC_ListEntry`1 value) [0x00000] in <filename unknown>:0
at XUiC_List`1[T].set_SelectedEntryIndex (Int32 value) [0x00000] in <filename unknown>:0
at XUiC_NewContinueGame.OnOpen () [0x00000] in <filename unknown>:0
at XUiController.OnOpen () [0x00000] in <filename unknown>:0
at XUiWindowGroup.OnOpen () [0x00000] in <filename unknown>:0
at GUIWindowManager.Open (.GUIWindow _w, Boolean _bModal, Boolean _bIsNotEscClosable, Boolean _bCloseAllOpenWindows) [0x00000] in <filename unknown>:0
at GUIWindowManager.Open (System.String _windowName, Boolean _bModal, Boolean _bIsNotEscClosable, Boolean _bCloseAllOpenWindows) [0x00000] in <filename unknown>:0
at XUiC_MainMenu.CheckProfile (System.String _windowToOpen) [0x00000] in <filename unknown>:0
at XUiC_MainMenu.btnContinueGame_OnPressed (.XUiController _sender, .OnPressEventArgs _e) [0x00000] in <filename unknown>:0
at XUiC_SimpleButton.Btn_OnPress (.XUiController _sender, .OnPressEventArgs _e) [0x00000] in <filename unknown>:0
at XUiController.OnPressed (.OnPressEventArgs _e) [0x00000] in <filename unknown>:0
at XUiController.Pressed (Int32 mouseButton) [0x00000] in <filename unknown>:0
at XUiView.OnClick (UnityEngine.GameObject _go) [0x00000] in <filename unknown>:0
at UIEventListener.OnClick () [0x00000] in <filename unknown>:0
UnityEngine.GameObject:SendMessage(String, Object, SendMessageOptions)
UICamera:Notify(GameObject, String, Object)
UICamera

rocessTouch(Boolean, Boolean, Boolean)
UICamera

rocessMouse()
UICamera

rocessTouches()
UICamera:Update()
(Filename: Line: -1)
2019-05-11T20:38:44 68.241 INF OnApplicationQuit
2019-05-11T20:38:44 68.242 INF OnApplicationQuit
Setting up 4 worker threads for Enlighten.
Thread -> id: 18e8 -> priority: 1
Thread -> id: 133c -> priority: 1
Thread -> id: 3b3c -> priority: 1
Thread -> id: 36b4 -> priority: 1