Widgets produce blank pages - how can I fix this?
 

I am new to using WordPress and have started with the Atahualpa theme. This theme is absolutely excellent! I have added a Recent Posts, Categories, and Archives widget. On the blog page, these widgets display posts beneath them, but when I click on the post in this area, it produces a blank page. This is happening with all three widgets. I am using WordPress 2.3.3 through Yahoo web hosting. Any idea on what I am missing or doing wrong? Thanks for any input!