diff --git a/build/common.targets b/build/common.targets
index 4b92ecc2..512107a0 100644
--- a/build/common.targets
+++ b/build/common.targets
@@ -7,7 +7,7 @@ repo. It imports the other MSBuild files as needed.
 <Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <!--set general build properties -->
-    <Version>3.18.0</Version>
+    <Version>3.18.1</Version>
     <Product>SMAPI</Product>
     <LangVersion>latest</LangVersion>
     <AssemblySearchPaths>$(AssemblySearchPaths);{GAC}</AssemblySearchPaths>
diff --git a/docs/release-notes.md b/docs/release-notes.md
index 9b2dea77..ae98a0c4 100644
--- a/docs/release-notes.md
+++ b/docs/release-notes.md
@@ -7,6 +7,15 @@
   _If needed, you can update to SMAPI 3.16.0 first and then install the latest version._
 -->
 
+## 3.18.1
+Released 01 December 2022 for Stardew Valley 1.5.6 or later.
+
+* For players:
+  * Fixed mod texture edits sometimes cut off (thanks to atravita!).
+
+* For the web UI:
+  * The log parser no longer warns about missing Error Handler on Android, where it doesn't exist yet (thanks to AnotherPillow!).
+
 ## 3.18.0
 Released 12 November 2022 for Stardew Valley 1.5.6 or later. See [release highlights](https://www.patreon.com/posts/74565278).
 
diff --git a/src/SMAPI.Mods.ConsoleCommands/manifest.json b/src/SMAPI.Mods.ConsoleCommands/manifest.json
index ddb0e20d..0afb5837 100644
--- a/src/SMAPI.Mods.ConsoleCommands/manifest.json
+++ b/src/SMAPI.Mods.ConsoleCommands/manifest.json
@@ -1,9 +1,9 @@
 {
     "Name": "Console Commands",
     "Author": "SMAPI",
-    "Version": "3.18.0",
+    "Version": "3.18.1",
     "Description": "Adds SMAPI console commands that let you manipulate the game.",
     "UniqueID": "SMAPI.ConsoleCommands",
     "EntryDll": "ConsoleCommands.dll",
-    "MinimumApiVersion": "3.18.0"
+    "MinimumApiVersion": "3.18.1"
 }
diff --git a/src/SMAPI.Mods.ErrorHandler/manifest.json b/src/SMAPI.Mods.ErrorHandler/manifest.json
index eeea1d28..fe802d88 100644
--- a/src/SMAPI.Mods.ErrorHandler/manifest.json
+++ b/src/SMAPI.Mods.ErrorHandler/manifest.json
@@ -1,9 +1,9 @@
 {
     "Name": "Error Handler",
     "Author": "SMAPI",
-    "Version": "3.18.0",
+    "Version": "3.18.1",
     "Description": "Handles some common vanilla errors to log more useful info or avoid breaking the game.",
     "UniqueID": "SMAPI.ErrorHandler",
     "EntryDll": "ErrorHandler.dll",
-    "MinimumApiVersion": "3.18.0"
+    "MinimumApiVersion": "3.18.1"
 }
diff --git a/src/SMAPI.Mods.SaveBackup/manifest.json b/src/SMAPI.Mods.SaveBackup/manifest.json
index 0acf066d..9a587a2b 100644
--- a/src/SMAPI.Mods.SaveBackup/manifest.json
+++ b/src/SMAPI.Mods.SaveBackup/manifest.json
@@ -1,9 +1,9 @@
 {
     "Name": "Save Backup",
     "Author": "SMAPI",
-    "Version": "3.18.0",
+    "Version": "3.18.1",
     "Description": "Automatically backs up all your saves once per day into its folder.",
     "UniqueID": "SMAPI.SaveBackup",
     "EntryDll": "SaveBackup.dll",
-    "MinimumApiVersion": "3.18.0"
+    "MinimumApiVersion": "3.18.1"
 }
diff --git a/src/SMAPI.Web/Views/LogParser/Index.cshtml b/src/SMAPI.Web/Views/LogParser/Index.cshtml
index c1251c21..b989417e 100644
--- a/src/SMAPI.Web/Views/LogParser/Index.cshtml
+++ b/src/SMAPI.Web/Views/LogParser/Index.cshtml
@@ -248,7 +248,7 @@ else if (log?.IsValid == true)
         {
             <h2>Suggested fixes</h2>
             <ul id="fix-list">
-                @if (errorHandler is null)
+                @if (errorHandler is null && log.ApiVersionParsed?.IsNewerThan("3.8.4") is true)
                 {
                     <li class="important">You don't have the <strong>Error Handler</strong> mod installed. This automatically prevents many game or mod errors. You can <a href="https://stardewvalleywiki.com/Modding:Player_Guide#Install_SMAPI">reinstall SMAPI</a> to re-add it.</li>
                 }
diff --git a/src/SMAPI/Constants.cs b/src/SMAPI/Constants.cs
index 02e75e05..c5058e4b 100644
--- a/src/SMAPI/Constants.cs
+++ b/src/SMAPI/Constants.cs
@@ -52,7 +52,7 @@ namespace StardewModdingAPI
         internal static int? LogScreenId { get; set; }
 
         /// <summary>SMAPI's current raw semantic version.</summary>
-        internal static string RawApiVersion = "3.18.0";
+        internal static string RawApiVersion = "3.18.1";
     }
 
     /// <summary>Contains SMAPI's constants and assumptions.</summary>
diff --git a/src/SMAPI/Framework/Content/AssetDataForImage.cs b/src/SMAPI/Framework/Content/AssetDataForImage.cs
index 7c8cc6a8..89ced1ba 100644
--- a/src/SMAPI/Framework/Content/AssetDataForImage.cs
+++ b/src/SMAPI/Framework/Content/AssetDataForImage.cs
@@ -140,9 +140,11 @@ namespace StardewModdingAPI.Framework.Content
         /// <exception cref="InvalidOperationException">The content being read isn't an image.</exception>
         private void PatchImageImpl(Color[] sourceData, int sourceWidth, int sourceHeight, Rectangle sourceArea, Rectangle targetArea, PatchMode patchMode, int startRow = 0)
         {
-            // get texture
+            // get texture info
             Texture2D target = this.Data;
             int pixelCount = sourceArea.Width * sourceArea.Height;
+            int firstPixel = startRow * sourceArea.Width;
+            int lastPixel = firstPixel + pixelCount - 1;
 
             // validate
             if (sourceArea.X < 0 || sourceArea.Y < 0 || sourceArea.Right > sourceWidth || sourceArea.Bottom > sourceHeight)
@@ -155,36 +157,34 @@ namespace StardewModdingAPI.Framework.Content
             // shortcut: replace the entire area
             if (patchMode == PatchMode.Replace)
             {
-                target.SetData(0, targetArea, sourceData, startRow * sourceArea.Width, pixelCount);
+                target.SetData(0, targetArea, sourceData, firstPixel, pixelCount);
                 return;
             }
 
             // skip transparent pixels at the start & end (e.g. large spritesheet with a few sprites replaced)
             int startIndex = -1;
             int endIndex = -1;
+            for (int i = firstPixel; i <= lastPixel; i++)
             {
-                for (int i = startRow * sourceArea.Width; i < pixelCount; i++)
+                if (sourceData[i].A >= AssetDataForImage.MinOpacity)
                 {
-                    if (sourceData[i].A >= AssetDataForImage.MinOpacity)
-                    {
-                        startIndex = i;
-                        break;
-                    }
+                    startIndex = i;
+                    break;
                 }
-                if (startIndex == -1)
-                    return; // blank texture
-
-                for (int i = startRow * sourceArea.Width + pixelCount - 1; i >= startIndex; i--)
-                {
-                    if (sourceData[i].A >= AssetDataForImage.MinOpacity)
-                    {
-                        endIndex = i;
-                        break;
-                    }
-                }
-                if (endIndex == -1)
-                    return; // ???
             }
+            if (startIndex == -1)
+                return; // blank texture
+
+            for (int i = lastPixel; i >= startIndex; i--)
+            {
+                if (sourceData[i].A >= AssetDataForImage.MinOpacity)
+                {
+                    endIndex = i;
+                    break;
+                }
+            }
+            if (endIndex == -1)
+                return; // ???
 
             // update target rectangle
             int sourceOffset;