Prevent crashes/exceptions when changing graphics presets

 - Can still get graphical artifacts but they seem to recover
 - Can further prevent issues by only allowing opening menu/toggling graphics settings when game is in clickwait state, but not done in this commit

Assets.Scripts.Core.AssetManagement/AssetManager.cs

@@ -589,6 +589,12 @@ public void CleanUpTextures()
 			}
 		}
 
+		public void InvalidateTextureCache()
+		{
+			textureReferences = new Dictionary<string, TextureReference>();
+			Resources.UnloadUnusedAssets();
+		}
+
 		public void DebugOutputTextureReferenceStatus()
 		{
 			StringBuilder stringBuilder = new StringBuilder();

Assets.Scripts.Core.Scene/Layer.cs

@@ -4,6 +4,8 @@
 using System.Collections;
 using System.IO;
 using UnityEngine;
+using MOD.Scripts.UI;
+using MOD.Scripts.Core;
 
 namespace Assets.Scripts.Core.Scene
 {
@@ -803,11 +805,17 @@ private void SetPrimaryTexture(string texName, out string texturePath)
 			else
 			{
 				Texture2D x = MODSceneController.LoadTextureWithFilters(layerID, texName, out texturePath);
-				lastTexturePath = texturePath;
+
+				// Check if texture is OK. If texture couldn't be loaded, return without doing anything
 				if (x == null)
 				{
-					throw new Exception("Failed to load texture: " + texName);
+					string errorString = $"Failed to load texture: {texName}";
+					MODLogger.Log(errorString, true);
+					MODToaster.Show(errorString, toastDuration: 10);
+					return;
 				}
+
+				lastTexturePath = texturePath;
 				if (primary != null)
 				{
 					AssetManager.Instance.ReleaseTexture(PrimaryName, primary);
@@ -872,8 +880,21 @@ public void HideLayer()
 			targetAngle = 0f;
 		}
 
+		// This function is only used by the mod!
 		public void ReloadTexture()
 		{
+			if(primary == null)
+			{
+				Debug.Log($"WARNING: Attempted to reload texture on layer {LayerID} but primary was null!");
+				return;
+			}
+
+			if(string.IsNullOrWhiteSpace(PrimaryName))
+			{
+				Debug.Log($"WARNING: Attempted to reload texture on layer {LayerID} but PrimaryName was null or whitespace!");
+				return;
+			}
+
 			if (PrimaryName == string.Empty)
 			{
 				// PrimaryName is set to string.Empty when Layer's texture is released -

Assets.Scripts.Core.Scene/SceneController.cs

@@ -967,8 +967,11 @@ public void GetScreenshot(Action<Texture2D> onFinishAction)
 			StartCoroutine(GetScreenshotCoroutine(onFinishAction));
 		}
 
+		// This function is only used by the mod!
 		public void ReloadAllImages()
 		{
+			AssetManager.Instance.InvalidateTextureCache();
+
 			Layer[] componentsInChildren = Panel1.GetComponentsInChildren<Layer>();
 			foreach (Layer layer in componentsInChildren)
 			{

MOD.Scripts.Core.Scene/MODSceneController.cs

@@ -242,7 +242,18 @@ public static Texture2D LoadTextureWithFilters(int? maybeLayer, string textureNa
 			watch.Stop();
 			MODUtility.FlagMonitorOnlyLog("Loaded " + textureName + " in " + watch.ElapsedMilliseconds + "ms (texture load only)");
 
-			if(!maybeLayer.HasValue)
+			if (texture == null)
+			{
+				texturePath = null;
+				return null;
+			}
+
+			if (texture.name == null)
+			{
+				MODLogger.Log($"WARNING: texture name is null when loading texture {textureName}", true);
+			}
+
+			if (!maybeLayer.HasValue)
 			{
 				MODUtility.FlagMonitorOnlyLog($">>> Not applying filter to {textureName} as provided layer is null");
 				return texture;