diff --git a/WebsitePanel/Sources/Tools/WebsitePanel.AWStats.Viewer.sln b/WebsitePanel/Sources/Tools/WebsitePanel.AWStats.Viewer.sln
index 748189db..f6b955ff 100644
--- a/WebsitePanel/Sources/Tools/WebsitePanel.AWStats.Viewer.sln
+++ b/WebsitePanel/Sources/Tools/WebsitePanel.AWStats.Viewer.sln
@@ -1,5 +1,5 @@
-Microsoft Visual Studio Solution File, Format Version 11.00
-# Visual Studio 2010
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 2012
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "WebsitePanel.AWStats.Viewer", "WebsitePanel.AWStats.Viewer\WebsitePanel.AWStats.Viewer.csproj", "{5F8C0079-C339-4590-BF10-DBA470329293}"
 EndProject
 Global
diff --git a/WebsitePanel/Sources/Tools/WebsitePanel.AWStats.Viewer/WebsitePanel.AWStats.Viewer.csproj b/WebsitePanel/Sources/Tools/WebsitePanel.AWStats.Viewer/WebsitePanel.AWStats.Viewer.csproj
index ba7f5487..d5c565e5 100644
--- a/WebsitePanel/Sources/Tools/WebsitePanel.AWStats.Viewer/WebsitePanel.AWStats.Viewer.csproj
+++ b/WebsitePanel/Sources/Tools/WebsitePanel.AWStats.Viewer/WebsitePanel.AWStats.Viewer.csproj
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" ToolsVersion="4.0">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <ProductVersion>9.0.30729</ProductVersion>
     <SchemaVersion>2.0</SchemaVersion>
@@ -27,7 +28,7 @@
     </FileUpgradeFlags>
     <UpgradeBackupLocation>
     </UpgradeBackupLocation>
-    <OldToolsVersion>3.5</OldToolsVersion>
+    <OldToolsVersion>4.0</OldToolsVersion>
     <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
     <TargetFrameworkProfile />
   </PropertyGroup>
@@ -149,6 +150,10 @@
     <Content Include="Web-v2.0.config" />
     <None Include="Web.config" />
   </ItemGroup>
+  <PropertyGroup>
+    <VisualStudioVersion Condition="'$(VisualStudioVersion)' == ''">10.0</VisualStudioVersion>
+    <VSToolsPath Condition="'$(VSToolsPath)' == ''">$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)</VSToolsPath>
+  </PropertyGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <PropertyGroup>
     <PreBuildEvent>
@@ -175,5 +180,6 @@
       </FlavorProperties>
     </VisualStudio>
   </ProjectExtensions>
-  <Import Project="$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v10.0\WebApplications\Microsoft.WebApplication.targets" />
+  <Import Project="$(VSToolsPath)\WebApplications\Microsoft.WebApplication.targets" Condition="'$(VSToolsPath)' != ''" />
+  <Import Project="$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v10.0\WebApplications\Microsoft.WebApplication.targets" Condition="false" />
 </Project>
\ No newline at end of file
diff --git a/WebsitePanel/Tools/diff.exe b/WebsitePanel/Tools/diff.exe
index 12fbd242..af27fd05 100644
Binary files a/WebsitePanel/Tools/diff.exe and b/WebsitePanel/Tools/diff.exe differ
diff --git a/WebsitePanel/Tools/diff.exe.config b/WebsitePanel/Tools/diff.exe.config
new file mode 100644
index 00000000..cb2586be
--- /dev/null
+++ b/WebsitePanel/Tools/diff.exe.config
@@ -0,0 +1,3 @@
+<?xml version="1.0"?>
+<configuration>
+<startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/></startup></configuration>