CFileDialog Assertion Error

[xJJx]

Hello all, I am writing a program that is using a modeless dialog for the gui. MFC is used as a shared dll and when i create a CFileDialog I get a Debug Assertion Error, can anyone help me? Here is the Code:

case ID_LOADPROXIES:
	{
		CFileDialog dlg(TRUE,"*.txt",NULL,OFN_EXPLORER|OFN_FILEMUSTEXIST,"Txt files (*.txt)|*.txt|");
			if(dlg.DoModal() == IDOK){
				std::string s;
					s.append(dlg.GetFolderPath());
				s.append(dlg.GetFileName());
					MessageBox(NULL, NULL, s.c_str(), MB_OK);
			}
	}
break;

As soon as the button is pressed the error happens, Any ideas?

[Codeplug]

Docs say filter should be terminated with two bars.
http://msdn.microsoft.com/en-us/libr...9d(VS.80).aspx

gg