Well, this error happened again. Today there are four tables marked "in use" and I am getting the following error log and "and an error has occurred for both my 2.0 and my 1.5.8a installs.

Code:
[14-Apr-2024 14:36:19 Europe/Berlin] Request URI: /, IP address: 127.0.0.1, Language id not set
#0 [internal function]: zen_debug_error_handler()
#1 C:\xampp\htdocs\ZC200RC1\includes\classes\db\mysql\query_factory.php(714): trigger_error()
#2 C:\xampp\htdocs\ZC200RC1\includes\classes\db\mysql\query_factory.php(659): queryFactory->show_error()
#3 C:\xampp\htdocs\ZC200RC1\includes\classes\db\mysql\query_factory.php(299): queryFactory->set_error()
#4 C:\xampp\htdocs\ZC200RC1\includes\classes\SessionHandler.php(66): queryFactory->Execute()
#5 [internal function]: Zencart\SessionHandler->read()
#6 C:\xampp\htdocs\ZC200RC1\includes\functions\sessions.php(48): session_start()
#7 C:\xampp\htdocs\ZC200RC1\includes\init_includes\init_sessions.php(106): zen_session_start()
#8 C:\xampp\htdocs\ZC200RC1\includes\autoload_func.php(40): require_once('C:\\xampp\\htdocs...')
#9 C:\xampp\htdocs\ZC200RC1\includes\application_top.php(253): require('C:\\xampp\\htdocs...')
#10 C:\xampp\htdocs\ZC200RC1\index.php(25): require('C:\\xampp\\htdocs...')
--> PHP Fatal error: MySQL error 1932: Table 'zc20.sessions' doesn't exist in engine :: SELECT value
                FROM sessions
                WHERE sesskey = 'he342vjlmssjtfnf6ui97tj8kh'
                AND expiry > '1713098179' ==> (as called by) C:\xampp\htdocs\ZC200RC1\includes\classes\SessionHandler.php on line 66 <== in C:\xampp\htdocs\ZC200RC1\includes\classes\db\mysql\query_factory.php on line 714.