Usually this is an issue with not uploading all of the supported files.
if you add this code to the top of the page, you may be able to get an error rather than a blank page that will tell you what needs to be corrected:
<?php
ini_set('display_errors',1);
?>
ps. If you want me to look at the code on one of your pages, please attach the page as an attachment, don't copy and paste the code it is more difficult to read in the browser, I'd rather open it in Dreamweaver.