As per this post I am trying to add an A-Z directory where it will just list posts that start with the relevant letter using the TwentyEleven theme and I'm struggling. I have added the code to search.php and added the links. These display OK, but when I click on a letter it just refreshes and goes to the home page (the links are on the home page).
The link is in the format www.domain.com/?&letter=t
Does anyone have any ideas?