How do you know the session isn't being carried over? - Did you not read my comment previously about you not even using the $_SESSION array? - That is where you store things. In your next script you then call session_start() and the $_SESSION array then contains all the keys and values you used previously in your last script.
I've not seen you use $_SESSION anywhere so how can you claim it's not working? - Anything you want made available to the next script must be put into the session array like this:
$_SESSION['text'] = 'Hello';
As for your blank page, if you're on wamp then you'll have an apache error log somewhere which will list the error with the page.