AJAX Recommend 'There was a problem with the request'

Hello, I'm hoping I can find a quick solution to this problem.  I'm using AJAX Recommend on a Joomla 1.5 installation in legacy mode.  The file is CHMOD to 755 (the entire AJAX Recommend directory is), yet I still get the issue.  You can see it at www.balloongeeks.com/cms   as I'm currently developing in a sub-directory.  I've searched through the forums, and found a solution related to SEF 404, but I'm not using that, but I am using the built-in Joomla SEF.  Any solutions would be greatly appreciated.  Thanks!

As FAQ says, the file www.balloongeeks.com/cms/modules/mod_aja...od_ajaxrecommend.php must be runnable. In your case it gives Internal Server Error when accessed directly.