How to disable compilation in Magento
It can be done by two:
1. From Magento admin
Navigate to System > Tools > Compilation page and click on Disable button
Navigate to System > Cache Management screen and use Flush Cache button.
2. Via SFTP/FTP, by editing the includes/config.php file
To disable compilation in Magento, edit includes/config.php.
#define(‘COMPILER_INCLUDE_PATH’, dirname(__FILE__).DIRECTORY_SEPARATOR.’src’);
define(‘COMPILER_COLLECT_PATH’, dirname(__FILE__).DIRECTORY_SEPARATOR.’stat’);