VCBUILD task in C# code

Hi,

Im writting a C# program to automate our builds utilizing the MSBUILD functionality. Alot of our code is written in C++. Does anyone know how to add the VCBUILD task to the engine.BuildProjectFile function? I've added my code snippet to the bottom of this message. I setup a log file to capture build error messages, and I get the following :

Quote:

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Build started 6/9/2011 5:01:14 PM.
__________________________________________________
Project "D:\Manitou\Releases\1.6.0\Fixes_1.6.0\Tapi\Boldphone\Boldphone.sln" (Build target(s)):

Target ValidateSolutionConfiguration:
Building solution configuration "Release|Win32".
Target Build:
Target Boldphone:
D:\Manitou\Releases\1.6.0\Fixes_1.6.0\Tapi\Boldphone\Boldphone.sln.cache(104,5): error MSB4036: The "VCBuild" task was not found. Check the following: 1.) The name of the task in the project file is the same as the name of the task class. 2.) The task class is "public" and implements the Microsoft.Build.Framework.ITask interface. 3.) The task is correctly declared with <UsingTask> in the project file, or in the *.tasks files located in the "C:\Windows\Microsoft.NET\Framework\v4.0.30319" directory.
Done building target "Boldphone" in project "Boldphone.sln" -- FAILED.
Done building target "Build" in project "Boldphone.sln" -- FAILED.

Done building project "Boldphone.sln" -- FAILED.

Build FAILED.

D:\Manitou\Releases\1.6.0\Fixes_1.6.0\Tapi\Boldphone\Boldphone.sln.cache(104,5): error MSB4036: The "VCBuild" task was not found. Check the following: 1.) The name of the task in the project file is the same as the name of the task class. 2.) The task class is "public" and implements the Microsoft.Build.Framework.ITask interface. 3.) The task is correctly declared with <UsingTask> in the project file, or in the *.tasks files located in the "C:\Windows\Microsoft.NET\Framework\v4.0.30319" directory.
0 Warning(s)
1 Error(s)

Time Elapsed 00:00:00.06

---

Here's a code snippet of my code so far:

Code:

---


      BuildPropertyGroup group = new BuildPropertyGroup();
                group.SetProperty("Configuration", "Release");

                Microsoft.Build.BuildEngine.Engine engine = new Engine();

                // Instantiate a new FileLogger to generate build log
                FileLogger logger = new FileLogger();

                // Set the logfile parameter to indicate the log destination
                logger.Parameters = @"logfile=C:\temp\build.log";

                // Register the logger with the engine
                engine.RegisterLogger(logger);

                // Initialize code
                Boolean success = engine.BuildProjectFile(@"D:\Manitou\Releases\1.6.0\Fixes_1.6.0\Tapi\Boldphone\Boldphone.sln", new String[] { "Build" }, group);

                //Unregister all loggers to close the log file
                engine.UnregisterAllLoggers();

                if (success)
                {
                    Console.WriteLine("Build succeeded.");
                }
                else
                {
                    Console.WriteLine(@"Build failed. View C:\temp\build.log for details");
                }

---

Thanks for anyhelp on this!

Larry