¿Someone have the same problem?, I can't loggin in my admin panel.
Check my database and it has disappeared mysteriously on my server

SQL Error: Could not execute query in /usr/local/centovacast/system/class_AccountControl.php:826
Error:   Table 'centova.accounts' doesn't exist
SQL Error: Could not execute query in /usr/local/centovacast/system/class_AccountControl.php:854
Error:   Table 'centova.staff' doesn't exist
SQL Error: Could not execute query in /usr/local/centovacast/system/class_AccountControl.php:909
Error:   Table 'centova.djaccounts' doesn't exist
SQL Error: Could not execute query in /usr/local/centovacast/system/class_UserSession.php:662
Error:   Table 'centova.login_bans' doesn't exist
SQL Error: Could not execute query in /usr/local/centovacast/system/class_UserSession.php:665
Error:   Table 'centova.login_bans' doesn't exist
SQL Error: Could not execute query in /usr/local/centovacast/system/class_UserSession.php:617
Error:   Table 'centova.logins' doesn't exist
SQL Error: Could not execute query in /usr/local/centovacast/system/class_Application.php:231
Error:   Table 'centova.settings' doesn't exist
SQL Error: Could not execute query in /usr/local/centovacast/system/class_UserSession.php:628
Error:   Table 'centova.logins' doesn't exist
SQL Error: Could not execute query in /usr/local/centovacast/system/class_EventLog.php:17
Error:   Table 'centova.accounts' doesn't exist
SQL Error: Could not execute query in /usr/local/centovacast/system/class_EventLog.php:51
Error:   Table 'centova.eventlog' doesn't exist

try to log in the database server and verify if the table still exist....In case, not i recommend to perform a restore of the database ( case you have one).

It can also be user locked, or even wrong schema configured in the database..

let me know...