Blocks not showing all of a sudden

I have been developing a new site for a few weeks now and, today, when I added a new Basic Page the DrupalExp Page Title block doesn't show on the page. It is displaying correctly on all previously added pages. The DrupalExp block is set to show on every page. I also use blocks that hold a banner image to be shown on selected pages. When new pages are added to the list the block won't show yet if old pages are included in the list the blocks show. Any ideas? PS: I flushed all caches.