Форумы / Cotonti / Support / Need help with an upgrade

Sorry about that, I forgot about the database prefix which is different between Genoa and Siena. This is the reason why your database now contains both cot_* and sed_* tables.

Before you run install.php open datas/config.php and change the value of $db_x from 'cot_' to 'sed_'.

You can remove all tables starting with cot_. Those were created when you ran install.php so most of them will be empty. It's easiest to just continue using sed_* tables, it doesn't make any difference for the system. The goal is to let install.php use your existing database tables instead of having it create new tables. For this it will have to know the right prefix, otherwise it won't detect your existing tables.