diff --git a/build/NuSpecs/ImageProcessor.nuspec b/build/NuSpecs/ImageProcessor.nuspec
index 25f95dee8..3caf71005 100644
--- a/build/NuSpecs/ImageProcessor.nuspec
+++ b/build/NuSpecs/ImageProcessor.nuspec
@@ -29,6 +29,7 @@
     </tags>
   </metadata>
   <files>
+    <file src="..\_BuildOutput\ImageProcessor\lib\net40\ImageProcessor.dll" target="lib\net40\ImageProcessor.dll" />
     <file src="..\_BuildOutput\ImageProcessor\lib\net45\ImageProcessor.dll" target="lib\net45\ImageProcessor.dll" />
     <file src="..\_BuildOutput\Help\docu\**" target="contents\docs\api" />
   </files>
diff --git a/build/build.ps1 b/build/build.ps1
index 0eb0efb55..ecd0661bd 100644
--- a/build/build.ps1
+++ b/build/build.ps1
@@ -76,21 +76,28 @@ task Build-Solution -depends Cleanup-Binaries, Set-VersionNumber {
 	Write-Host "Building projects"
 
 	# build the projects
-	$PROJECTS.projects.project | % {
-		if ($_.projfile -eq $null -or $_.projfile -eq "") {
-			return # breaks out of ForEach-Object loop
+	# regular "$xmlobject.node | % { $_ }" don't work when they're nested: http://fredmorrison.wordpress.com/2013/03/19/reading-xml-with-powershell-why-most-examples-you-see-are-wrong/
+	[System.Xml.XmlElement] $root = $PROJECTS.get_DocumentElement()
+	[System.Xml.XmlElement] $project = $null
+	foreach($project in $root.ChildNodes) {
+		if ($project.projfile -eq $null -or $project.projfile -eq "") {
+			continue # goes to next item
 		}
-		
-		$projectPath = Resolve-Path $_.folder
-		Write-Host "Building project $($_.name) at version $($_.version)"
 
-		# it would be possible to update more infos from the xml (description etc), so as to have all infos in one place
-		Update-AssemblyInfo -file (Join-Path $projectPath "Properties\AssemblyInfo.cs") -version $_.version
+		$projectPath = Resolve-Path $project.folder
+		Write-Host "Building project $($project.name) at version $($project.version)"
 
-		# using the invoke-expression on a string solves a few character escape issues
-		$buildCommand = "msbuild $(Join-Path $projectPath $_.projfile) /t:Build /p:Warnings=true /p:Configuration=Release /p:PipelineDependsOnBuild=False /p:OutDir=$(Join-Path $BIN_PATH $($_.output)) /clp:WarningsOnly /clp:ErrorsOnly /clp:Summary /clp:PerformanceSummary /v:Normal /nologo"
-		Exec {
-			Invoke-Expression $buildCommand
+		# it would be possible to update more infos from the xml (description etc), so as to have all infos in one place
+		Update-AssemblyInfo -file (Join-Path $projectPath "Properties\AssemblyInfo.cs") -version $project.version
+
+		[System.Xml.XmlElement] $output = $null
+		foreach($output in $project.outputs.ChildNodes) {
+			# using invoke-expression solves a few character escape issues
+			$buildCommand = "msbuild $(Join-Path $projectPath $project.projfile) /t:Build /p:Warnings=true /p:Configuration=Release /p:PipelineDependsOnBuild=False /p:OutDir=$(Join-Path $BIN_PATH $output.folder) $($output.additionalParameters) /clp:WarningsOnly /clp:ErrorsOnly /clp:Summary /clp:PerformanceSummary /v:Normal /nologo"
+			Write-Host $buildCommand -ForegroundColor DarkGreen
+			Exec {
+				Invoke-Expression $buildCommand
+			}
 		}
 	}
 }
diff --git a/build/build.xml b/build/build.xml
index dd5e75a0e..1e9190fe1 100644
--- a/build/build.xml
+++ b/build/build.xml
@@ -4,7 +4,10 @@
     <version>2.1.0.0</version>
     <folder>..\src\ImageProcessor</folder>
     <projfile>ImageProcessor.csproj</projfile>
-    <output>ImageProcessor\lib\net45</output>
+    <outputs>
+      <output additionalParameters="/p:Framework=NET40" folder="ImageProcessor\lib\net40" />
+      <output additionalParameters="/p:Framework=NET45" folder="ImageProcessor\lib\net45" />
+    </outputs>
     <nuspec>ImageProcessor.nuspec</nuspec>
   </project>
 
@@ -13,7 +16,9 @@
     <version>4.1.0.0</version>
     <folder>..\src\ImageProcessor.Web</folder>
     <projfile>ImageProcessor.Web.csproj</projfile>
-    <output>ImageProcessor.Web\lib\net45</output>
+    <outputs>
+      <output folder="ImageProcessor.Web\lib\net45" />
+    </outputs>
     <nuspec>ImageProcessor.Web.nuspec</nuspec>
   </project>
 
@@ -28,7 +33,9 @@
     <version>1.0.0.0</version>
     <folder>..\src\Plugins\ImageProcessor\ImageProcessor.Plugins.Cair</folder>
     <projfile>ImageProcessor.Plugins.Cair.csproj</projfile>
-    <output>ImageProcessor.Plugins.Cair\lib\net45</output>
+    <outputs>
+      <output folder="ImageProcessor.Plugins.Cair\lib\net45" />
+    </outputs>
     <nuspec>ImageProcessor.Plugins.Cair.nuspec</nuspec>
   </project>
 
@@ -37,7 +44,9 @@
     <version>1.0.1.0</version>
     <folder>..\src\Plugins\ImageProcessor\ImageProcessor.Plugins.WebP</folder>
     <projfile>ImageProcessor.Plugins.WebP.csproj</projfile>
-    <output>ImageProcessor.Plugins.WebP\lib\net45</output>
+    <outputs>
+      <output folder="ImageProcessor.Plugins.WebP\lib\net45" />
+    </outputs>
     <nuspec>ImageProcessor.Plugins.WebP.nuspec</nuspec>
   </project>
 </projects>
\ No newline at end of file
diff --git a/src/ImageProcessor/ImageProcessor.csproj b/src/ImageProcessor/ImageProcessor.csproj
index ad4363c1f..c5f4a8146 100644
--- a/src/ImageProcessor/ImageProcessor.csproj
+++ b/src/ImageProcessor/ImageProcessor.csproj
@@ -25,7 +25,7 @@
     <DebugType>full</DebugType>
     <Optimize>false</Optimize>
     <OutputPath>bin\Debug\</OutputPath>
-    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <DefineConstants>DEBUG;TRACE;NET45</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <DocumentationFile>bin\Debug\ImageProcessor.XML</DocumentationFile>
@@ -54,7 +54,7 @@
     <DebugType>pdbonly</DebugType>
     <Optimize>true</Optimize>
     <OutputPath>bin\Release\</OutputPath>
-    <DefineConstants>TRACE</DefineConstants>
+    <DefineConstants>TRACE;NET45</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <DocumentationFile>bin\Release\ImageProcessor.XML</DocumentationFile>
@@ -80,7 +80,7 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'All|AnyCPU'">
     <DebugSymbols>true</DebugSymbols>
     <OutputPath>bin\All\</OutputPath>
-    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <DefineConstants>DEBUG;TRACE;NET45</DefineConstants>
     <DocumentationFile>bin\Debug\ImageProcessor.XML</DocumentationFile>
     <DebugType>full</DebugType>
     <PlatformTarget>AnyCPU</PlatformTarget>
@@ -225,20 +225,4 @@
   <ItemGroup />
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <Import Project="$(SolutionDir)\.nuget\NuGet.targets" Condition="Exists('$(SolutionDir)\.nuget\NuGet.targets')" />
-  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
-       Other similar extension points exist, see Microsoft.Common.targets.
-  <Target Name="BeforeBuild">
-  </Target>
-  <Target Name="AfterBuild">
-  </Target>
-  -->
-  <Target Name="AfterBuild">
-    <!-- This just allows us to drop a note in the build output -->
-    <Message Text="Enter After Build TargetFrameworkVersion:$(TargetFrameworkVersion) Framework:$(Framework)" Importance="high" />
-    <!-- This is the key to the whole process. The second build happens here.  We set our 'Framework' variable allowing the above PropertyGroups to run more frameworks.  -->
-    <MSBuild Condition=" '$(Framework)' != 'NET40'" Projects="$(MSBuildProjectFile)" Properties="Framework=NET40" RunEachTargetSeparately="true" />
-    <!-- You could repeat the above node again here and target another framework if there was a property group that would evaluate to true-->
-    <!-- Just more logging -->
-    <Message Text="Exiting After Build TargetFrameworkVersion:$(TargetFrameworkVersion) Framework:$(Framework)" Importance="high" />
-  </Target>
 </Project>
\ No newline at end of file