[Regss]

During installation, an error must have occurred and the users table is not correctly filled.

Movies synchronize when You go to main site: index.php

If the movies can not be synchronized. And users do not want to add. The problem lies in the execution of the INSERT statement to the database. Check whether the user through which you connect to the database has permission to execute INSERT statement.

Connection Configuration to the database is in the db.php file.

EDIT:
I forgot about one decimal point and there may be a problem with synchronization. I just added the amendment. Download function.php again from here: movielib