Controller file was loaded but class does not exist? - mysql

Question

I am having trouble getting around this error in Magento:
"Controller file was loaded but class does not exist". (Full stack at bottom).
I am essentially trying to follow this tutorial: http://phpshiner.blogspot.in/2012/09/simple-custom-payment-module-part-1.html in magento.
I am having trouble finding good documentation on Magento in general, and I am very new at it...
can anyone provide some common causes, advice, or insight? I am swamped, googled this for hours, check permissions and file structure. You name it.
Trace:
#0 C:\Apache24\htdocs\magento\app\code\core\Mage\Core\Controller\Varien\Router\Standard.php(326): Mage::exception('Mage_Core', 'Controller file...')
#1 C:\Apache24\htdocs\magento\app\code\core\Mage\Core\Controller\Varien\Router\Standard.php(293): Mage_Core_Controller_Varien_Router_Standard->_includeControllerClass('C:\Apache24\htd...', 'Mage_Checkout_O...')
#2 C:\Apache24\htdocs\magento\app\code\core\Mage\Core\Controller\Varien\Router\Standard.php(196): Mage_Core_Controller_Varien_Router_Standard->_validateControllerClassName('Mage_Checkout', 'onepage')
#3 C:\Apache24\htdocs\magento\app\code\core\Mage\Core\Controller\Varien\Front.php(176): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#4 C:\Apache24\htdocs\magento\app\code\core\Mage\Core\Model\App.php(354): Mage_Core_Controller_Varien_Front->dispatch()
#5 C:\Apache24\htdocs\magento\app\Mage.php(683): Mage_Core_Model_App->run(Array)
#6 C:\Apache24\htdocs\magento\index.php(87): Mage::run('', 'store')
#7 {main}

Answer 1

Check your controller class name is correct ?

Answer 2

I also got that error when I was using WinSCP.
Problem is that my file was not saved correctly.
When I have saved it again and then reload my page and error was gone.
Maybe this will help you.

Answer 3

If not able to locate the issue.
Please go there(Standard.php)
Mage_Core_Controller_Varien_Router_Standard
In this function please add like this and execute the page.
protected function _includeControllerClass($controllerFileName, $controllerClassName)
{
echo $controllerFileName."#############".$controllerClassName;
echo "<br/>";
You will get the issue module and location
Thanks
Annadurai