I have a custom built menu system in which I would like to load user controls from another project into a tab control on my main project (menu control)

User control Project : foobar Menu system Project : Menu

The function to load them into the tab control:

private void LaunchWPFApplication(string header, string pPath)
        {
            // Header - What loads in the tabs header portion.
            // pPath   - Page where to send the user

            //Create a new browser tab object
            BrowserTab bt = tabMain.SelectedItem as BrowserTab;
            bt = new BrowserTab();
            bt.txtHeader.Text = header;
            bt.myParent = BrowserTabs;

             //Load in the path 
        try
        {
            Type formType = Type.GetType(pPath, true);
            bt.Content = (UserControl)Activator.CreateInstance(formType);
        }
        catch
        {
            MessageBox.Show("The specified user control : " + pPath + " cannot be found");
        }

            //Add the browser tab and then focus            
            BrowserTabs.Add(bt);
            bt.IsSelected = true;
        }

And what I send to the function as an example:

LaunchWPFApplication("Calculater", "foobar.AppCalculater");

But every time run, the application complains that the formType is null. I am confused on how to load the user control and curious if I'm sending the correct parameters.