diff --git a/projects/vstudio/pnglibconf/pnglibconf.vcxproj b/projects/vstudio/pnglibconf/pnglibconf.vcxproj
index 2da2d0a2e..7c691c32d 100644
--- a/projects/vstudio/pnglibconf/pnglibconf.vcxproj
+++ b/projects/vstudio/pnglibconf/pnglibconf.vcxproj
@@ -40,7 +40,7 @@
       <OptimizeReferences>true</OptimizeReferences>
     </Link>
     <CustomBuildStep>
-      <Command>copy ..\..\..\scripts\pnglibconf.h_prebuilt ..\..\..\pnglibconf.h</Command>
+      <Command>copy ..\..\..\scripts\pnglibconf.h.prebuilt ..\..\..\pnglibconf.h</Command>
     </CustomBuildStep>
     <CustomBuildStep>
       <Message>Generating pnglibconf.h</Message>
@@ -49,67 +49,7 @@
       <Outputs>..\..\..\pnglibconf.h</Outputs>
     </CustomBuildStep>
     <CustomBuildStep>
-      <Inputs>..\..\..\scripts\pnglibconf.h_prebuilt</Inputs>
-    </CustomBuildStep>
-  </ItemDefinitionGroup>
-  <ItemGroup>
-  </ItemGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
-  <ImportGroup Label="ExtensionTargets">
-  </ImportGroup>
-</Project>
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <ItemGroup Label="ProjectConfigurations">
-    <ProjectConfiguration Include="Release|Win32">
-      <Configuration>Release</Configuration>
-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
-  </ItemGroup>
-  <PropertyGroup Label="Globals">
-    <ProjectGuid>{EB33566E-DA7F-4D28-9077-88C0B7C77E35}</ProjectGuid>
-    <RootNamespace>pnglibconf</RootNamespace>
-  </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
-    <ConfigurationType>Application</ConfigurationType>
-    <UseDebugLibraries>false</UseDebugLibraries>
-    <WholeProgramOptimization>true</WholeProgramOptimization>
-    <CharacterSet>MultiByte</CharacterSet>
-  </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
-  <ImportGroup Label="ExtensionSettings">
-  </ImportGroup>
-  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
-  </ImportGroup>
-  <PropertyGroup Label="UserMacros" />
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
-    <CustomBuildBeforeTargets>Build</CustomBuildBeforeTargets>
-  </PropertyGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
-    <ClCompile>
-      <WarningLevel>Level3</WarningLevel>
-      <Optimization>MaxSpeed</Optimization>
-      <FunctionLevelLinking>true</FunctionLevelLinking>
-      <IntrinsicFunctions>true</IntrinsicFunctions>
-    </ClCompile>
-    <Link>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
-      <EnableCOMDATFolding>true</EnableCOMDATFolding>
-      <OptimizeReferences>true</OptimizeReferences>
-    </Link>
-    <CustomBuildStep>
-      <Command>copy ..\..\..\scripts\pnglibconf.h_prebuilt ..\..\..\pnglibconf.h</Command>
-    </CustomBuildStep>
-    <CustomBuildStep>
-      <Message>Generating pnglibconf.h</Message>
-    </CustomBuildStep>
-    <CustomBuildStep>
-      <Outputs>..\..\..\pnglibconf.h</Outputs>
-    </CustomBuildStep>
-    <CustomBuildStep>
-      <Inputs>..\..\..\scripts\pnglibconf.h_prebuilt</Inputs>
+      <Inputs>..\..\..\scripts\pnglibconf.h.prebuilt</Inputs>
     </CustomBuildStep>
   </ItemDefinitionGroup>
   <ItemGroup>
diff --git a/projects/vstudio/readme.txt b/projects/vstudio/readme.txt
index 6c138e86e..6440972d2 100644
--- a/projects/vstudio/readme.txt
+++ b/projects/vstudio/readme.txt
@@ -1,7 +1,7 @@
 
 VisualStudio instructions
 
-libpng version 1.5.0beta45 - August 24, 2010
+libpng version 1.5.0beta45 - August 25, 2010
 
 Copyright (c) 1998-2010 Glenn Randers-Pehrson
 
diff --git a/projects/vstudio/zlib.props b/projects/vstudio/zlib.props
index 5cf99bf1e..1a684ce68 100644
--- a/projects/vstudio/zlib.props
+++ b/projects/vstudio/zlib.props
@@ -2,7 +2,7 @@
 <!--
  * zlib.props - location of zlib source
  *
- * libpng version 1.5.0beta45 - August 24, 2010
+ * libpng version 1.5.0beta45 - August 25, 2010
  *
  * Copyright (c) 1998-2010 Glenn Randers-Pehrson
  *