installing when debug is on

It seems that when debug is on an Error is thrown and the db table #__scheduler_options is not created

Reason (to the best of my knowledge):

$query = "SELECT * FROM #__scheduler_options WHERE name='scheduler_php'";
$db->setQuery($query);
$config_exists = $db->loadResult($query);

throws the error if the table does not exist

Solution (...):Use check similar to

$query = "SHOW TABLES LIKE '".$db->getPrefix()."events_rec'";