Can't scrape after log in

Hi

I wrote two scraping file based on the tutorial 3 for log in. First file is to log in the site and second one is to extract the pattern.
From the response for the first scraping file I can see that I've logged in.
However for the second scraping file (with the different URL) it redirect to signup page as if I haven't log in.

It says in the tutorial that the screen-scraper automatically retain the cookies for the log in. Is anything else I am missing?

I am using the pro edition.

Thanks a lot