msbuild task in NAnt does not compile WiX project in Postbuild

Question

This WiX Setup project compiles in Visual Studio without a problem.

However, running it in NAnt using the msbuild task shows the following error.

msbuild task:

<msbuild project="App_Installers\App.Setup\App.Setup.wixproj">
        <property name="Configuration" value="Release"/>
        <property name="target" value="Rebuild"/>
        <property name="verbosity" value="Normal"/>
       <property name="SolutionDir" value="${build.dir}"/>
</msbuild>

Postbuild event that fails:

"$(SolutionDir)\App_Tools\Signing Certificate\signtool.exe" sign /f "$(SolutionDir)\App_Tools\Signing Certificate\Comodo_Company_Signing_Certificate.pfx" /p password /d "Company Consulting" "$(ProjectDir)obj\$(PlatformName)\$(ConfigurationName)\$(TargetFileName)" "$(TargetPath)"

Error message SignOutput:

  [msbuild]
  [msbuild] "E:\Projects\Company\App\Development\trunk\src\App_Installers\R
oCo.Setup\App.Setup.wixproj" (default target) (1) ->
  [msbuild] "E:\Projects\Company\App\Development\trunk\src\App_Shell\App.c
sproj" (default target) (39) ->
  [msbuild] (PostBuildEvent target) ->
  [msbuild]   C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Microsoft.Common.t
argets(4291,5): error MSB3073: The command ""E:\Projects\Company\App\Develop
ment\trunk\src\App_Tools\Signing Certificate\signtool.exe" sign /f "E:\Projects
\Company\App\Development\trunk\src\App_Tools\Signing Certificate\Comodo_Company_Signing_Certificate.pfx" /p password /d "Company Consulti
ng" "E:\Projects\Company\App\Development\trunk\src\App_Shell\obj\x86\Releas
e\App.exe" "E:\Projects\Company\App\Development\trunk\src\App_Shell\bin\Re
lease\App.exe" [E:\Projects\Company\App\Development\trunk\src\App_Shell\App.csproj]
  [msbuild] C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Microsoft.Common.tar
gets(4291,5): error MSB3073:  [E:\Projects\Company\App\Development\trunk\src
\App_Shell\App.csproj]
  [msbuild] C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Microsoft.Common.tar
gets(4291,5): error MSB3073: IF EXIST %ALLUSERSPROFILE% GOTO VISTAORWIN7 [E:\Pro
jects\Company\App\Development\trunk\src\App_Shell\App.csproj]
  [msbuild] C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Microsoft.Common.tar
gets(4291,5): error MSB3073:  [E:\Projects\Company\App\Development\trunk\src
\App_Shell\App.csproj]
  [msbuild] C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Microsoft.Common.tar
gets(4291,5): error MSB3073: :XP [E:\Projects\Company\App\Development\trunk\
src\App_Shell\App.csproj]
  [msbuild] C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Microsoft.Common.tar
gets(4291,5): error MSB3073: mkdir "%ALLUSERSPROFILE%\Application Data\Company" [E:\Projects\Company\App\Development\trunk\src\App_Shell\App.csproj]
  [msbuild] C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Microsoft.Common.tar
gets(4291,5): error MSB3073: mkdir "%ALLUSERSPROFILE%\Application Data\Company\Company Consulting"  [E:\Projects\Company\App\Development\trunk\src\App_Shell\App.csproj]
  [msbuild] C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Microsoft.Common.tar
gets(4291,5): error MSB3073: mkdir "%ALLUSERSPROFILE%\Application Data\Company\Company Consulting\Modules"  [E:\Projects\Company\App\Development\trunk
\src\App_Shell\App.csproj]
  [msbuild] C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Microsoft.Common.tar
gets(4291,5): error MSB3073: xcopy "E:\Projects\Company\App\Development\trun
k\srcApp_Shell\Modules\App.ModuleCatalog.xml" "%ALLUSERSPROFILE%\Application D
ata\Company\Company Consulting\Modules" /S /Y [E:\Projects\Company\App
\Development\trunk\src\App_Shell\App.csproj]
  [msbuild] C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Microsoft.Common.tar
gets(4291,5): error MSB3073: xcopy "E:\Projects\Company\App\Development\trun
k\srcApp_Shell\Users.xml" "%ALLUSERSPROFILE%\Application Data\Company\Company Consulting" /S /Y [E:\Projects\Company\App\Development\trunk\src\App_S
hell\App.csproj]
  [msbuild] C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Microsoft.Common.tar
gets(4291,5): error MSB3073: GOTO END [E:\Projects\Company\App\Development\t
runk\src\App_Shell\App.csproj]
  [msbuild] C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Microsoft.Common.tar
gets(4291,5): error MSB3073:  [E:\Projects\Company\App\Development\trunk\src
\App_Shell\App.csproj]
  [msbuild] C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Microsoft.Common.tar
gets(4291,5): error MSB3073: :VISTAORWIN7 [E:\Projects\Company\App\Developme
nt\trunk\src\App_Shell\App.csproj]
  [msbuild] C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Microsoft.Common.tar
gets(4291,5): error MSB3073: mkdir "%ALLUSERSPROFILE%\Company" [E:\Projects\Company\App\Development\trunk\src\App_Shell\App.csproj]
  [msbuild] C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Microsoft.Common.tar
gets(4291,5): error MSB3073: mkdir "%ALLUSERSPROFILE%\Company\Company Cons
ulting"  [E:\Projects\Company\App\Development\trunk\src\App_Shell\App.cspr
oj]
  [msbuild] C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Microsoft.Common.tar
gets(4291,5): error MSB3073: mkdir "%ALLUSERSPROFILE%\Company\Company Cons
ulting\Modules"  [E:\Projects\Company\App\Development\trunk\src\App_Shell\R
oCo.csproj]
  [msbuild] C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Microsoft.Common.tar
gets(4291,5): error MSB3073: xcopy "E:\Projects\Company\App\Development\trun
k\srcApp_Shell\Modules\App.ModuleCatalog.xml" "%ALLUSERSPROFILE%\Company\Company Consulting\Modules" /S /Y [E:\Projects\Company\App\Development\trun
k\src\App_Shell\App.csproj]
  [msbuild] C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Microsoft.Common.tar
gets(4291,5): error MSB3073: xcopy "E:\Projects\Company\App\Development\trun
k\srcApp_Shell\Users.xml" "%ALLUSERSPROFILE%\Company\Company Consulting"
/S /Y [E:\Projects\Company\App\Development\trunk\src\App_Shell\App.csproj]

  [msbuild] C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Microsoft.Common.tar
gets(4291,5): error MSB3073:  [E:\Projects\Company\App\Development\trunk\src
\App_Shell\App.csproj]
  [msbuild] C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Microsoft.Common.tar
gets(4291,5): error MSB3073: :END" exited with code 4. [E:\Projects\Company\App\Development\trunk\src\App_Shell\App.csproj]
  [msbuild]
  [msbuild]     182 Warning(s)
  [msbuild]     1 Error(s)
  [msbuild]
  [msbuild] Time Elapsed 00:01:49.45

BUILD FAILED