Hi to all, i'm new here.

Until yesterday i was able to start, run and stop server using mysql database.

Today, at startup, i have the following error:

Code:
---------------------------------------------------------------
-------------- log started at 21-10-05 09:59 -------------
---------------------------------------------------------------
21-10-05 09:59:47,ALL,Info,server,      Server init initialized
21-10-05 09:59:47,ALL,Info,server,      Server version: 2.0.20.1 Linux
21-10-05 09:59:47,ERROR,All,SQL,        SQL file not found mysql_sql/read_servers.sql
21-10-05 09:59:47,ERROR,All,SQL,        SQL file not found mysql_sql/new_server.sql
21-10-05 09:59:47,ERROR,All,SQL,        SQL file not found mysql_sql/read_server_privilege.sql
21-10-05 09:59:47,ERROR,All,SQL,        SQL file not found mysql_sql/new_server_privilege.sql
21-10-05 09:59:47,ERROR,All,SQL,        SQL file not found mysql_sql/read_server_privilege.sql
21-10-05 09:59:47,ERROR,All,SQL,        SQL file not found mysql_sql/new_server_privilege.sql
21-10-05 09:59:47,ERROR,All,SQL,        SQL file not found mysql_sql/read_server_privilege.sql
21-10-05 09:59:47,ERROR,All,SQL,        SQL file not found mysql_sql/new_server_privilege.sql
21-10-05 09:59:47,ERROR,All,SQL,        SQL file not found mysql_sql/read_server_privilege.sql
21-10-05 09:59:47,ERROR,All,SQL,        SQL file not found mysql_sql/new_server_privilege.sql
21-10-05 09:59:47,ERROR,All,SQL,        SQL file not found mysql_sql/read_server_privilege.sql
21-10-05 09:59:47,ERROR,All,SQL,        SQL file not found mysql_sql/new_server_privilege.sql
21-10-05 09:59:47,ERROR,All,SQL,        SQL file not found mysql_sql/read_server_privilege.sql
21-10-05 09:59:47,ERROR,All,SQL,        SQL file not found mysql_sql/new_server_privilege.sql
21-10-05 09:59:47,ALL,Info,server,      Starting VirtualServer id:0 with port:8767
21-10-05 09:59:47,ERROR,All,SQL,        SQL file not found mysql_sql/edit_server.sql
21-10-05 09:59:47,ERROR,All,SQL,        SQL file not found mysql_sql/read_bans.sql
21-10-05 09:59:47,WARNING,Info,SERVER,  Default VirtualServer created
21-10-05 09:59:47,ERROR,All,SQL,        SQL file not found mysql_sql/read_clients_name.sql
21-10-05 09:59:47,ERROR,All,SQL,        SQL file not found mysql_sql/new_client.sql
21-10-05 09:59:47,WARNING,Info,SERVER,  admin account info: username: admin password: u2uleq
21-10-05 09:59:47,ERROR,All,SQL,        SQL file not found mysql_sql/read_clients_name.sql
21-10-05 09:59:47,ERROR,All,SQL,        SQL file not found mysql_sql/new_client.sql
21-10-05 09:59:47,WARNING,Info,SERVER,  superadmin account info: username: superadmin password: gt2pn7
21-10-05 09:59:47,ERROR,All,SQL,        SQL file not found mysql_sql/read_channels.sql
21-10-05 09:59:47,ERROR,All,SQL,        SQL file not found mysql_sql/new_channel.sql
Note that the server starts, but each time it changes admin and superadmin passwords, because (i think), it uses sqlite instead of mysql db.

How can i return to use mysql?