Recently when I attempted to log in to my WordPress admin page at ‘http://domain.org/wp/wp-admin’, the page was blank. I had no idea what was going on. My local WordPress install was working fine, so I checked my remote files against my locals and saw nothing out of the ordinary. Then it simply hit me that a lot of the books and tutorials on the function.php file always mentoined weird results to your page if there were any line breaks at the beginning or end of your file. So I checked and sure enough there were some spaces at the end of my functions.php file which I deleted and uploaded it all was right again.