Calendar class problem

I thought I explained clear enough...

Well I am using the exact same code as the userguide example:

$this->load->library('calendar');
echo $this->calendar->generate();

And this does not seem to work. The library isnt loaded and because of that the error indicates that the calendar->generate method doesnt excist.....

Do you have any model/library or other class loaded with the same name calendar ? 
Some times such name duplication can fuck you up..

You can var_dump($this->calendar) just to be sure that this is the required Library class.

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