Fatal error when placing order

I have encountered an problem with the E-Commerce Google Checkout module and do not know what is wrong. I am hoping a gracious individual will offer some assistance. I am new to the Drupal community, I hope this is the proper place to present this issue.

Upon pressing the "Place Order" button I receive the following error:

Fatal error: require_once() [function.require]: Failed opening required 'library/googleitem.php' (include_path='.:/usr/share/php:/usr/share/pear') in /var/www/stpauls/sites/all/modules/gcheckout/gcheckout.module on line 218

I have found a couple of pages relating to this problem but have not found a solution. There was a thread in the Drupal forums, #254135: cannot submit order. As you can see it is closed, unfortunately it did not help me. I do have the required library files in the gcheckout folder.

I also found something on the topic in a bug report under the Google Checkout sample PHP code. The bug report says that it could be a problem with the way the server handles the 'include_path'. If it matters, I am running Apache 2.2.

Thanks in advance for assistance.