As described, this component easily changed the database prefix in just a minute or so. Unfortunately, when it attempted to update the configuration.php file, it managed to zero the file out which, of course, is what drove the rating down. I would suggest the author work on that issue and perhaps include an option to not update the configuration file so that users could choose.
Owner's replyThank you for the review.
my tests did not find this problem. Now component have been updated.