New Post: [WP8] ViewModel - View convention bug?

I'm working on two projects using Caliburn.micro, the first is being developed in WP7 and works fine, the second with WP8 (the same structure) is not working properly.

I have a "ViewModels" folder and a "Views" folder. The Views folder has a page "ManageChecklistView", and the folder ViewModels has a ViewModel "ManageChecklistViewModel" that inherits from Screen.
I setup the viewmodel in the bootstrapper:

container.PerRequest<ManageChecklistViewModel>();

In MainPage there is a method to navigate to that viewmodel with this code:

navigationService.UriFor<ManageChecklistViewModel>().Navigate();

An exception is occurring when frame is navigating, in the NavigationFailed event.

System.InvalidOperationException: No XAML was found at the location '/ Views / ManageView.xaml'.

Both projects are with version 1.4.1.

Has anyone gone through this and could help me?