I downloaded a extension for a report calaculating the cost of goods sold. The extension works on the developers site and it exactly what I need. Unfortunately when I installed it on my site, it shows a blank page where the report is suppose to me. I do not get the reports displayed, however no errors are displayed either. There is an error in logs.
I have limited SQL knowledge and would like someone to get the extension to work on my Magento Communtiy [url removed, login to view] website.