7
           
            
                
     
    
    I think it has something to do with the mainfile.php (both XOOPS instances who have the problem are old XOOPS versions that were upgraded) 
In mainfile.Php i have 
// XOOPS Virtual Path (URL)
 // Virtual path to your main XOOPS directory WITHOUT trailing slash
 define('XOOPS_URL', 'http://www.agrreviews.com');
 define('XOOPS_CHECK_PATH', 1);
While it should be 
// XOOPS Virtual Path (URL)
 // Virtual path to your main XOOPS directory WITHOUT trailing slash
 define('XOOPS_URL', '');
 define('XOOPS_CHECK_PATH', 1);
as far as i know?