Blank Page When Posting Posts

I posted this question before, but I can’t find it when I do a search. When I make a new post, I click on “View Site” and it takes me to http://www.superheromarketing.com/blog (which is where I installed WordPress). The person who originally responded to my question said my entire site was blank so it must be a bigger problem, but the site was blank because I had not uploaded anything. I have the index page up now with a menu and some text, and it displays just fine, but the blog continues to display a blank white page. How can I get the blog working?