Nirvana-theme (un)compatibility?

WP Theme: “Cryout Nirvana”. Adding the slider as widget on the right column, the numbers of the dots of the navigation appear as text (1,2,3…) ghostly on the main page (central column), at the end of the post(s). If you disable “Navigation” in the slider’s settings, you don’t see anything in the widget. No result in changing height.