I had a similar problem which might apply here. Invoking a search would just kick me out to the root index page of my site instead of the root of the blog. My blog was mywebsite.com/blog Take a look at the sidebar.php file in your current theme folder. Look for a line like this: <form id=”searchform” method=”get” action=”/blog/index.php”> I had to change it to reflect the correct path to my blog and now it works fine.