hai bro, i am unable to get a large cat for some categories for example open mobile and tablets from site and check that.. please gave me suggestions to solve this bro...
thank u...............

@Ghany
Check if images has been successfully uploaded to your hosting.

yes bro it was uploaded and i am able to see in file manager...

@Ghany
Can you send me URL, category name and link to category image?

http://classibook.com/oc-content/themes/zara_child/images/large_cat/104.jpg

and category name was mobiles and tablets

@Ghany
- go to file:
oc-content/themes/zara/inc.category.php

- find line:
<?php if(file_exists(osc_base_path() . 'oc-content/themes/zara/images/large_cat/' . osc_category_id() . '.jpg')) { ?>
- replace with:
<?php if(file_exists(osc_base_path() . 'oc-content/themes/' . osc_current_web_theme() . '/images/large_cat/' . osc_category_id() . '.jpg')) { ?>

thanka bro..... issue solved................   

@Ghany
Cool

bro,, after updating images my site loading time goes to more than 3sec from 1 - 2 sec, is there any solution for this?

@Ghany
There has been any major change with influence on performance or loading time.

no bro after removing style from two styles as per last ticket.. my site speed increased loaded with in sec bt i dont knw why it was loading again more than sec from yesterday ....

@Ghany
Notting to do with latest update.

not a issue bro... i will try to increase speed...

thank for u r help