Fatal error: Class 'Controller' not found

[eluser]evilNT[/eluser]
Fatal error: Class 'Controller' not found in /var/www/CI/system/application/controllers/welcome.php on line 3
Any suggestions?

[eluser]Michael Wales[/eluser]
You definitely don't have everything installed correctly, please refer to the User Guide.

[eluser]ELRafael[/eluser]
Look the var $system_folder and $application_folder inside the main index.php file :-P

Code:

$system_folder = "something_here";

Code:

$application_folder = "another_something_here";