Moving CI website to another server - only blank page showing

Dear Forum!

I have to move a website to an another serer. I never moved CodeIgniter websites before, and the site is not made by me. (I'm new in CI...)
I copied all files from the original server, to the new place. And I exported the MySQL database, and imported it into the new server. I edited the index.php, application/config/config.php and database.php. And when I want to show the page, nothing happened. In the browser I only saw a blank page. (The source was empty.)
Please help me, where can I find the error, and what went wrong?

Thanks:
P.

Before moving the actual site, did you test if your new server setup and fresh CI installation were functioning properly? (easiest way is to just set up CI and try to browse to the site to see if you get CI's welcome page)

I'd check:
Server settings:
* is the server running Nginx or Apache? If Nginx, are you running PHP-fpm? If Apache, did you install PHP, etc?
* is the virtualhost configured to use PHP in your web directory
* is the virtualhost pointed to the correct route where your application lives?

I'm all guessing here, but some configuration snippets from your new installation would greatly help sorting this issue.

Javier Larroulet