posts 404 error

Posts only show in summary. I get a 404 error when I click more. Unistalled Graphy theme and used 2014 instead with no problem. I also tried deactivating all my plugins and it made no difference.
It’s strange because I have show posts in full text (not summary) option selected in settings so don’t know why its showing the summary at all. I really want to get this to work because otherwise this is a beautiful theme.