error load library of grocery_crud

Hi, I'm new to grocery crud and i'm having this problem:

My library of grocery crud doesn't load.

I think is something with the version of the programs them i'm using, but i cant find nothing to help me.

I'm using:

codeigniter 2.26

php 5.3.4

GC 1.6.3

i already have tried all the topics in here with blank page error and load library, but my code still didn't working.

the error is in this part of code:

$this->load->library('Grocery_CRUD');

i have download grocery crud and did all the steps of merge texts/codes

but my web page is in blank and stop running the rest of the code.

I thank you in advance