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This is what I get on the homepage on my site, but I have no idea of what is wrong.
All I want is just a clue.
Warning: Invalid argument supplied for foreach() in C:\xampp\htdocs\praticado\app\code\core\Mage\Catalog\Block\Breadcrumbs.php on line 39  in Mage_Catalog_Block_Breadcrumbs->_prepareLayout() in C:\xampp\htdocs\praticado\app\code\core\Mage\Core\Block\Abstract.php on line 185