Windows Can someone help me out

I believe one of your mods is creating a conflict. What I suggest you do is remove them all (mind that you have mods being loaded from two separate folders) and boot up the game with a fresh world to confirm if the game loads fine without them. Then you should add each mod back until you receive the error and you'll know which one is the culprit.
 
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This NullReferenceException is pretty prominent..

Code:
NullReferenceException: Object reference not set to an instance of an object
  at (wrapper dynamic-method) PlayerMoveController.DMD<System.Void PlayerMoveController:Update()>(PlayerMoveController)
  at (wrapper dynamic-method) MonoMod.Utils.DynamicMethodDefinition.SyncProxy<System.Void PlayerMoveController:Update()>(PlayerMoveController)

... and Claude spotted the potential root cause...

At line 989–990, right when the UI tries to build the backpack window:

Code:
Unhandled exception in GetBindingValue. Binding name: creativewindowopen, hierarchy: windowgroup (backpack) -> Window (windowBackpackAGF)
MissingMethodException: Method not found: XUiController.get_xui()

AGF-BackpackPlus is calling a xui property on XUiController that doesn't exist in the 3.0.0 build you're actually running — it was written against the 4.0 API. That single failure breaks the backpack window's XUi construction.

I don't know about the "written against the 4.0 API" part as I think Claude might be mixing up modlet version numbers with game version numbers, but it is suggesting a modlet that is responsible.
 
I have a few mods, all say they are 3.0 ready but i cant load into the game. I've attached the log file. Any help is greatly appreciated.
If you read the posts for AGF's BackpackPlus mod on Nexus, where I assume you got it, you'll see that it doesn't work with the QuickStack mod right now. There are posts suggesting ways you can try to fix it, though.
 
Here's the original exception. It certainly has to do with a UI issue:
Code:
2026-07-10T22:52:57 89.607 ERR Unhandled exception in GetBindingValue. Binding name: creativewindowopen, hierarchy: windowgroup (backpack) -> Window (windowBackpackAGF)
MissingMethodException: Method not found: XUi .XUiController.get_xui()
  at (wrapper dynamic-method) XUiC_BackpackWindow.DMD<System.Boolean XUiC_BackpackWindow:GetBindingValueInternal(System.String&, System.String)>(XUiC_BackpackWindow,string&,string)
  at (wrapper dynamic-method) MonoMod.Utils.DynamicMethodDefinition.SyncProxy<System.Boolean XUiC_BackpackWindow:GetBindingValueInternal(System.String&, System.String)>(XUiC_BackpackWindow,string&,string)
  at XUiController.GetBindingValue (System.String& _value, System.String _bindingName) [0x00027] in <d983dee3f9114d09bdb3b5f8df4452f8>:0
  at BindingItemStandard..ctor (BindingInfo _parent, System.String _sourceText) [0x00039] in <d983dee3f9114d09bdb3b5f8df4452f8>:0
  at BindingInfo..ctor (XUiView _view, System.String _attribute, System.String _sourceText) [0x001b3] in <d983dee3f9114d09bdb3b5f8df4452f8>:0
  at BindingsManager.CreateBinding (XUiView _view, System.String _attribute, System.String _value) [0x00029] in <d983dee3f9114d09bdb3b5f8df4452f8>:0
  at XUiView.ParseInitialAttributeValue (System.String _attribute, System.String _value) [0x0000d] in <d983dee3f9114d09bdb3b5f8df4452f8>:0
  at XUiFromXml.parseAttribute (XUiView _viewComponent, System.String _attributeNameLower, System.String _value, System.Collections.Generic.Dictionary`2[TKey,TValue] _templateParams) [0x0000c] in <d983dee3f9114d09bdb3b5f8df4452f8>:0
  at XUiFromXml.parseAttributes (System.Xml.Linq.XElement _node, XUiView _viewComponent, System.Collections.Generic.Dictionary`2[TKey,TValue] _templateParams) [0x0016b] in <d983dee3f9114d09bdb3b5f8df4452f8>:0
  at XUiFromXml.parseViewComponents (System.Xml.Linq.XElement _node, XUiWindowGroup _windowGroup, XUiController _parent, System.String _nodeNameOverride, System.Collections.Generic.Dictionary`2[TKey,TValue] _templateParams) [0x00096] in <d983dee3f9114d09bdb3b5f8df4452f8>:0
  at XUiFromXml.parseViewComponents (System.Xml.Linq.XElement _node, XUiWindowGroup _windowGroup, XUiController _parent, System.String _nodeNameOverride, System.Collections.Generic.Dictionary`2[TKey,TValue] _templateParams) [0x001a8] in <d983dee3f9114d09bdb3b5f8df4452f8>:0
  at XUiFromXml.parseViewComponents (System.Xml.Linq.XElement _node, XUiWindowGroup _windowGroup, XUiController _parent, System.String _nodeNameOverride, System.Collections.Generic.Dictionary`2[TKey,TValue] _templateParams) [0x001a8] in <d983dee3f9114d09bdb3b5f8df4452f8>:0
  at XUiFromXml.parseViewComponents (System.Xml.Linq.XElement _node, XUiWindowGroup _windowGroup, XUiController _parent, System.String _nodeNameOverride, System.Collections.Generic.Dictionary`2[TKey,TValue] _templateParams) [0x001a8] in <d983dee3f9114d09bdb3b5f8df4452f8>:0
  at XUiFromXml.parseWindow (System.Xml.Linq.XElement _windowElement, XUiWindowGroup _windowGroup, XUiV_Window& _window) [0x000a7] in <d983dee3f9114d09bdb3b5f8df4452f8>:0
  at XUiFromXml.parseWindowGroup (XUi _xui, System.String _windowGroupToLoad, System.Xml.Linq.XElement _groupElement, XUiWindowGroup& _windowGroup) [0x001b9] in <d983dee3f9114d09bdb3b5f8df4452f8>:0
  at XUiFromXml.LoadXui (XUi _xui, System.String _windowGroupToLoad) [0x00079] in <d983dee3f9114d09bdb3b5f8df4452f8>:0
  at XUi+<loadAsync>d__139.MoveNext () [0x00172] in <d983dee3f9114d09bdb3b5f8df4452f8>:0
  at UnityEngine.SetupCoroutine.InvokeMoveNext (System.Collections.IEnumerator enumerator, System.IntPtr returnValueAddress) [0x00026] in <c39a522eee05469b8171a6cfeb646c59>:0
 
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