Hello,
I tried to override the default system views located under framework/views as instructed here: http://www.yiiframework.com/doc/guide/1.1/en/basics.view
"Yii provides a set of default system views located under framework/views. They can be customized by creating the same-named view files under protected/views/system."
So I created protected/views/system/error404.php but it had absolutely no effect when I tried to access a non-existent URL (like: index.php?r=lalala).
Please help. Thanks.