diff --git a/appveyor.yml b/appveyor.yml
index f6583a9f6..695ee8f2c 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -20,17 +20,17 @@ environment:
     platform: Win32
     bin_dir: bin32
     artifact_suffix: -Win32
-    PlatformToolset: v100
+    PlatformToolset: v140_xp
   - configuration: Release-SSE2
     platform: Win32
     bin_dir: bin32
     artifact_suffix: -Win32-sse2
-    PlatformToolset: v100
+    PlatformToolset: v140_xp
   - configuration: Release
     platform: x64
     bin_dir: bin64
     artifact_suffix: -Win64
-    PlatformToolset: v140
+    PlatformToolset: v140_xp
 
 before_build:
 - ps: |
@@ -91,7 +91,6 @@ deploy:
   tag: $(pov_tag_version)
   release: $(pov_build_title) $(pov_build_version)
   description: $(pov_build_message)
-
   auth_token:
     secure: WkcFPXyr/SJ9TXixTQyivhfoR9FzlryIbc4deHeQ0eA6YRXL0wQopMYJ6XL1/FJK
   draft: true
diff --git a/source/base/version.h b/source/base/version.h
index 36508f102..c8ac314c9 100644
--- a/source/base/version.h
+++ b/source/base/version.h
@@ -45,7 +45,7 @@
 #define OFFICIAL_VERSION_STRING "3.7.1"
 #define OFFICIAL_VERSION_NUMBER 371
 
-#define POV_RAY_PRERELEASE "alpha.8755786"
+#define POV_RAY_PRERELEASE "alpha.8764097"
 
 #if (POV_RAY_IS_AUTOBUILD == 1) && ((POV_RAY_IS_OFFICIAL == 1) || (POV_RAY_IS_SEMI_OFFICIAL == 1))
 #ifdef POV_RAY_PRERELEASE
diff --git a/unix/VERSION b/unix/VERSION
index 82250fde0..386169155 100644
--- a/unix/VERSION
+++ b/unix/VERSION
@@ -1 +1 @@
-3.7.1-alpha.8755786
+3.7.1-alpha.8764097
diff --git a/windows/readme.html b/windows/readme.html
index bb51ad8ad..f72004b08 100644
--- a/windows/readme.html
+++ b/windows/readme.html
@@ -24,7 +24,7 @@
 <div class="Header">
 <p>
 Persistence of Vision Ray Tracer ('POV-Ray') version 3.7.<br>
-Copyright 1991-2013 Persistence of Vision Raytracer Pty. Ltd.
+Copyright 1991-2016 Persistence of Vision Raytracer Pty. Ltd.
 </p>
 
 <p>
@@ -46,15 +46,6 @@
 along with this program.  If not, see <a href="http://www.gnu.org/licenses/">http://www.gnu.org/licenses/</a>
 </p>
 </div>
-<br>
-<div class="Header">
-<pre><code>$File: //depot/public/povray/3.x/windows/readme.html $
-$Revision: #1 $
-$Change: 6069 $
-$DateTime: 2013/11/06 11:59:40 $
-$Author: chrisc $
-</code></pre>
-</div>
 
 <div class="Main">
 
@@ -105,6 +96,15 @@ <h3>Visual Studio 2015</h3>
 Community edition.
 </p>
 
+<p>
+<b>Note:</b> By default, binaries generated by Visual Studio 2015 will be
+incompatible with Windows XP. If you need XP support, you will have to change
+the platform toolset from <code>v140</code> to <code>v140_xp</code>, either by
+manually editing all project settings or by running the build from the command
+prompt with the environment variable <code>PlatformToolset</code> set to
+<code>v140_xp</code>.
+</p>
+
 <h3>Earlier Versions of Visual Studio</h3>
 
 <p>
diff --git a/windows/readme.txt b/windows/readme.txt
index 91cf7dcc2..757e4ffd4 100644
--- a/windows/readme.txt
+++ b/windows/readme.txt
@@ -1,7 +1,7 @@
 ------------------------------------------------------------------------
 
 Persistence of Vision Ray Tracer ('POV-Ray') version 3.7.
-Copyright 1991-2013 Persistence of Vision Raytracer Pty. Ltd.
+Copyright 1991-2016 Persistence of Vision Raytracer Pty. Ltd.
 
 POV-Ray is free software: you can redistribute it and/or modify it under
 the terms of the GNU Affero General Public License as published by the
@@ -18,14 +18,6 @@ along with this program. If not, see http://www.gnu.org/licenses/
 
 ------------------------------------------------------------------------
 
-$File: //depot/public/povray/3.x/windows/readme.txt $
-$Revision: #1 $
-$Change: 6069 $
-$DateTime: 2013/11/06 11:59:40 $
-$Author: chrisc $
-
-------------------------------------------------------------------------
-
 =======================================
 Building the POV-Ray for Windows source
 =======================================
@@ -72,6 +64,12 @@ The Visual Studio 2010 projects should also build fine in Visual Studio 2015
 after automatic conversion, as has been tested with the Visual Studio 2015
 Community edition.
 
+*Note:* By default, binaries generated by Visual Studio 2015 will be
+incompatible with Windows XP. If you need XP support you will have to change
+the platform toolset from |v140| to |v140_xp|, either by manually editing all
+project settings or by running the build from the command prompt with the
+environment variable |PlatformToolset| set to |v140_xp|.
+
 Earlier Versions of Visual Studio
 ---------------------------------