index page to single post not working

Hi,

I started a photoblog http://www.diggpix.net. it worked very nice… until i thought of adding another site to the same wordpress platform. i had to change config.php and .htaccess. it didn’t work so i removed them and now the index page looks fine but clicking on posts on the main index page do not direct to the actual post. it shows as if the post is empty. Can anyone please assist? thanx