I've downloaded, unzipped, and uploaded all of the Concrete 5 files to a website directory. When I visit that directory I see these errors:

Warning: require_once(/home/cbmdevelopers/domains/concrete5.example.com/concrete/config/../models/attribute/set.php) [function.require-once]: failed to open stream: No such file or directory in /home/cbmdevelopers/domains/concrete5.example.com/concrete/libraries/loader.php on line 55

Fatal error: require_once() [function.require]: Failed opening required '/home/cbmdevelopers/domains/concrete5.example.com/concrete/config/../models/attribute/set.php' (include_path='.:/usr/local/lib/php:/usr/local/php5/lib/pear:/home/cbmdevelopers/domains/concrete5.example.com/libraries/3rdparty:/home/cbmdevelopers/domains/concrete5.example.com/concrete/config/../libraries/3rdparty') in /home/cbmdevelopers/domains/concrete5.example.com/concrete/libraries/loader.php on line 55

And that's it -- there's nothing else on the page.

I've tried using a slightly older version of Concrete 5 and I've deleted the files and tried again. I also made sure that the config/ and files/ directories were 777.

I'm on a LAMP setup running PHP 5.2.13. I have a MySQL database already created for it, but I don't even get to the point where I get asked to put in that info.

I'm not sure what to do here.