I have installed it from magento connect, and now in my back-end it displayed as it. Please somebody help me how to fix it. I gues it causing by i was put the compliation mode in on. Thank you
Please Check in your Module like
If your module in Local folder then
app/code/local/Altima/Lookbook/Helper/Data.php file Available or not if not then please create the file as below code.
class Altima_Lookbook_Helper_Data extends Mage_Core_Helper_Abstract
Now refresh your cache and test it