I am using Fishpig to integrate my blog into my magento installation. It is all working but when I try switching themes I get the following warning and then my theme switches back to the default.

include(): Failed opening 'Mage/0/Helper/Core.php' for inclusion (include_path='/var/www/site/app/code/local:/var/www/site/app/code/community:/var/www/site/app/code/core:/var/www/site/lib:.:/usr/share/php:/usr/share/pear') in /var/www/site/lib/Varien/Autoload.php on line 94

Im having a hard time tracking this error down because I can not figure out what the 0 represents in


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