Added Wix installer as a nuget package. Hopefully this will fix the new build agent.

Meade.net.Setup/Meade.net.Setup.wixproj

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" DefaultTargets="Build" InitialTargets="EnsureWixToolsetInstalled" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\packages\WiX.3.11.2\build\wix.props" Condition="Exists('..\packages\WiX.3.11.2\build\wix.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
@@ -8,6 +9,8 @@
     <SchemaVersion>2.0</SchemaVersion>
     <OutputName>Meade.net.Setup</OutputName>
     <OutputType>Package</OutputType>
+    <NuGetPackageImportStamp>
+    </NuGetPackageImportStamp>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x86' ">
     <OutputPath>bin\$(Platform)\$(Configuration)\</OutputPath>
@@ -49,6 +52,7 @@
   <ItemGroup>
     <Content Include="Config.wxi" />
     <Content Include="License.rtf" />
+    <Content Include="packages.config" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\Meade.net.focuser\Meade.net.focuser.csproj">
@@ -81,6 +85,12 @@
   <Target Name="EnsureWixToolsetInstalled" Condition=" '$(WixTargetsImported)' != 'true' ">
     <Error Text="The WiX Toolset v3.11 (or newer) build tools must be installed to build this project. To download the WiX Toolset, see http://wixtoolset.org/releases/" />
   </Target>
+  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
+    <PropertyGroup>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
+    </PropertyGroup>
+    <Error Condition="!Exists('..\packages\WiX.3.11.2\build\wix.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\WiX.3.11.2\build\wix.props'))" />
+  </Target>
   <!--
 	To modify your build process, add your task inside one of the targets below and uncomment it.
 	Other similar extension points exist, see Wix.targets.

Meade.net.Setup/packages.config

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+  <package id="WiX" version="3.11.2" />
+</packages>