MainPage on a class library throws an AccessViolationException

Is it possible to let the MainPage on a different assembly (ClassLibrary)? Every time I try to start the application from a page that is on a different assembly the application throws an AccessViolationException.

if (rootFrame.Content == null)
{
    // When the navigation stack isn't restored navigate to the first page,
    // configuring the new page by passing required information as a navigation
    // parameter
    if (!rootFrame.Navigate(typeof(ClassLibrary1.BlankPage1), e.Arguments))
    {
        throw new Exception("Failed to create initial page");
    }
}