Hi there. It seems you now have it installed correctly, but for other people, I think this could be one of two issues:
1. Database permissions. If you're getting database errors, this means that the MySQL user you set up doesn't have all the privileges necessary for the database you set up. The privileges required are:
CREATE, ALTER, DELETE, INSERT, SELECT, UPDATE, LOCK TABLES
2. File system permissions. If you're getting errors when installing the Question2Answer files on your server, this means that you're trying to place it in a directory that you do not have write permissions for. The solution depends on your web hosting setup, but at the very least check that you're uploading it to the right place on your server. Apart from that, you'll need to contact your hosting provider.