BackgroundWorker InvalidOperationException

Hi folks,

I'm trying to put together my first usage of BackgroundWorker. The problem is that the compiler is throwing the following exception in Debug mode:

Once that happens, no code after ReportProgress runs (the Debug::WriteLine() func does not execute). The exception is being thrown anytime I try to call the Worker's Report-Progress method from within its Do-Work method. My Do-Work method is as follows:

void backgroundWorkerFolderAnalysis_DoWork( Object^ sender, DoWorkEventArgs^ e )

BackgroundWorker^ bgWorker = dynamic_cast<BackgroundWorker^>(sender);

}

My Progress-Changed method is empty:

void backgroundWorkerFolderAnalysis_ProgressChanged( Object^ sender, ProgressChangedEventArgs^ e )

/ Debug::WriteLine(Convert::ToString(0));

My setup for the BackgroundWorker is:

backgroundWorkerFolderAnalysis->RunWorkerCompleted += gcnew RunWorkerCompletedEventHandler( this, &Form1::backgroundWorkerFolderAnalysis_RunWorkerCompleted );

backgroundWorkerFolderAnalysis->DoWork += gcnew DoWorkEventHandler(this, &Form1::backgroundWorkerFolderAnalysis_DoWork);

backgroundWorkerFolderAnalysis->ProgressChanged += gcnew ProgressChangedEventHandler( this, &Form1::backgroundWorkerFolderAnalysis_ProgressChanged );

Help !