Sempre que executo esse comando, gera o erro MSB3073 com o código 9009

$(WixPath)heat dir $(Publish) -dr INSTALLFOLDER -ke -srd -cg DatoCheckerWebComponents -var var.publishDir -gg -out $(WebSiteContentCode)

Todo o arquivo de compilação está aqui:

<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="3.5" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
    <PropertyGroup>
        <WebSiteSource>..\DatoCheckerMvc\</WebSiteSource>
        <SetupF>..\Setup\</SetupF>
        <PublishF>publish\</PublishF>
        <Publish>$(SetupF)$(PublishF)</Publish>
        <WebSiteContentCode>WebSiteContent.wxs</WebSiteContentCode>
    </PropertyGroup>

    <!-- Defining group of temporary files which is the content of the web site. -->
    <ItemGroup>
        <WebSiteContent Include="$(WebSiteContentCode)" />
    </ItemGroup>

    <!-- The list of WIX input files -->
    <ItemGroup>
        <WixCode Include="Product.wxs" />
        <WixCode Include="$(WebSiteContentCode)" />
    </ItemGroup>

    <Target Name="Build">
        <!-- Compile whole solution in release mode -->
        <MSBuild
            Projects="..\DatoCheckerMvc.sln"
            Targets="ReBuild"
            Properties="Configuration=Release" />
    </Target>

    <Target Name="PublishWebsite">
        <!-- Remove complete publish folder in order to be sure that evrything will be newly compiled -->
        <Message Text="Removing publish directory: $(SetupF)"/>
        <RemoveDir Directories="$(SetupF)" ContinueOnError="false" />
        <Message Text="Start to publish website" Importance="high" />
        <MSBuild
            Projects="..\\DatoCheckerMvc\DatoCheckerMvc.csproj"
            Targets="ResolveReferences;_CopyWebApplication"
            Properties="OutDir=$(Publish)bin\;WebProjectOutputDir= $(Publish);Configuration=Release" />
    </Target>

    <Target Name="Harvest">
        <!-- Harvest all content of published result -->
        <Exec Command='$(WixPath)heat dir $(Publish) -dr INSTALLFOLDER -ke -srd -cg DatoCheckerWebComponents -var var.publishDir -gg -out $(WebSiteContentCode)'
            ContinueOnError="false"
            WorkingDirectory="." />
    </Target>
</Project>

O comando que eu uso para chamar essa compilação é:

 msbuild /t:Build;PublisWebsite;Harvest setup.build

O que eu deveria fazer?