Getting "Undefined property" error message

[eluser]mddd[/eluser]
Inside a controller or model, $this means: the CI object.
But inside a library, $this means: the library. You have to get the CI object and then call the other library through that object.

So you should change this:

Code:

$this->error_handler->get_error($e, $_SERVER['HTTP_REFERER']);

into this:

Code:

$CI =& get_instance(); // get a reference to the CI object
$CI->error_handler->get_error($e, $_SERVER['HTTP_REFERER']); // call the error through the CI object