Upadated a site from 6.3.5000 to 6.3.5018 now the Navigation is gone where I use group pages!!
Could it be that while fixing this bug feedback.telerik.com/.../114733-navigation-widget-using-all-pages-under-particular-page-causes-error
a much worse bug was introduced?
PS: I should not have updated on a Friday evening before going on vacation. Guess no feedback from Telerik and I have revert back to old version :-/