Problem with library extension

[eluser]rockstyle[/eluser]
Hi there,

I tried to use this piece of library: http://ellislab.com/forums/viewthread/150027/
when something weird happened ( I used exactly the same content, changed nothing):

Code:

Fatal error: Call to undefined method CI_Config::set() in C:\xampplite\htdocs\myapp\application\controllers\admin.php on line 50

which is:

Code:

$this->config->set('service_price', '4,99');

File (MY_Config.php) is put in /application/libraries/ folder and it should work, but doesn't. Any help appreciated.

[eluser]InsiteFX[/eluser]
If your running CI 2.0.+

If the library is in the system/core folder then your extended library goes into application/core !
If the library is in the system/libraries folder then your extended library goes into application/libraries !

Config.php is a Core library - You have the library in the wrong folder!

InsiteFX

[eluser]rockstyle[/eluser]
Thank you so much. It worked out