"Configuration" property not working when building a solution?

Hi everybody!

I'm having some problems building a simple C++ console application using MSBuild (VS2005 Beta 2)
From what I've seen I should be able to do this:
MSBuild HelloWorld.sln /t:Rebuild /p:Configuration=Debug
To build my project for Debug only.

However: The above command results inboththe Release and Debug configurations being built, it seems like the Configuration property is ignored?

Turning on diagnostic logging gives me the results below. If you look at the commandline passed to VCbuild.exe no configuration argument is specified, causing all configurations to be built - can anyone tell me what's going on here? I'm I doing something wrong?

Regards
Johan Nyvaller
Build responsible ABB Robotics
Microsoft (R) Build Engine Version 2.0.50215.44
[Microsoft .NET Framework, Version 2.0.50215.44]
Copyright (C) Microsoft Corporation 2005. All rights reserved.

Build started 2005-06-01 14:04:04.
__
Project "C:\MyBuild\Johans Projekt\BuildTest2\sources\HelloWorld\HelloWorld.sln" (Rebuild target(s)):

Target Rebuild:
Using "Warning" task from assembly "Microsoft.Build.Tasks, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a".
Task "Warning"
C:\MyBuild\Johans Projekt\BuildTest2\sources\HelloWorld\HelloWorld.sln : warning : MSB4098: MSBuild is invoking VCBuild to build this project or solution. Project-to-project references between VC++ projects (.VCPROJ) and C#/VB/VJ# projects (.CSPROJ, .VBPROJ, .VJSPROJ) are not supported by the command-line build systems. Projects that contain such project-to-project references will fail to build. To work around the issue, use "devenv /build" or replace your project-to-project references with references to the built assemblies.
Done executing task "Warning".
Using "VCBuild" task from assembly "Microsoft.Build.Tasks, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a".
Task "VCBuild"
Locating vcbuild.exe: found at "C:\Program Files\Microsoft Visual Studio 8\Common7\IDE\..\..\vc\vcpackages\vcbuild.exe".
Command:
VCBuild.exe /rebuild "C:\MyBuild\Johans Projekt\BuildTest2\sources\HelloWorld\HelloWorld.sln"
The "VCBuild" task is using "VCBuild.exe" from "C:\Program Files\Microsoft Visual Studio 8\Common7\IDE\..\..\vc\vcpackages\vcbuild.exe".
Microsoft (R) Visual C++ Project Builder - Command Line Version 8.00.50215
Copyright (C) Microsoft Corp 1993-2003. All rights reserved.

Rebuild started: Project: HelloWorld, Configuration: Debug|Win32
Deleting intermediate and output files for project 'HelloWorld', configuration 'Debug|Win32'
Compiling...
HelloWorld.cpp
stdafx.cpp
Generating Code...
Compiling manifest to resources...
Linking...
Embedding manifest...
Build log was saved at "file://c:\MyBuild\Johans Projekt\BuildTest2\sources\HelloWorld\Debug\BuildLog.htm"
HelloWorld - 0 error(s), 0 warning(s)
Rebuild started: Project: HelloWorld, Configuration: Release|Win32
Deleting intermediate and output files for project 'HelloWorld', configuration 'Release|Win32'
Compiling...
stdafx.cpp
HelloWorld.cpp
Generating Code...
Linking...
Embedding manifest...
Build log was saved at "file://c:\MyBuild\Johans Projekt\BuildTest2\sources\HelloWorld\Release\BuildLog.htm"
HelloWorld - 0 error(s), 0 warning(s)

Build complete: 2 Projects succeeded, 0 Projects failed, 0 Projects skipped
Done executing task "VCBuild".
Done building target "Rebuild" in project "HelloWorld.sln".

Done building project "HelloWorld.sln".

Project Performance Summary:
1719 ms C:\MyBuild\Johans Projekt\BuildTest2\sources\HelloWorld\HelloWorld.sln 1 calls

Target Performance Summary:
1719 ms Rebuild 1 calls

Task Performance Summary:
0 ms Warning 1 calls
1703 ms VCBuild 1 calls

Build succeeded.
C:\MyBuild\Johans Projekt\BuildTest2\sources\HelloWorld\HelloWorld.sln : warning : MSB4098: MSBuild is invoking VCBuild to build this project or solution. Project-to-project references between VC++ projects (.VCPROJ) and C#/VB/VJ# projects (.CSPROJ, .VBPROJ, .VJSPROJ) are not supported by the command-line build systems. Projects that contain such project-to-project references will fail to build. To work around the issue, use "devenv /build" or replace your project-to-project references with references to the built assemblies.
1 Warning(s)
0 Error(s)

Time Elapsed 00:00:01.73

[4938 byte] By [JohanNyvaller] at [2008-2-7]