Hi again. I found the error log and it read this:
[02-Jun-2014 11:15:07] WordPress database error Table 'wp_options' is marked as crashed and should be repaired for query SELECT option_value FROM wp_options WHERE option_name = 'cron' LIMIT 1 made by require_once('wp-admin/admin.php'), require_once('wp-load.php'), require_once('wp-config.php'), require_once('wp-settings.php'), do_action('init'), call_user_func_array, wp_cron, _get_cron_array, get_option
[02-Jun-2014 11:15:07] WordPress database error Duplicate entry 'cron' for key 'option_name' for query INSERT INTO <code>wp_options</code> (<code>option_name</code>, <code>option_value</code>, <code>autoload</code>) VALUES ('cron', 'a:2:{i:1401707707;a:1:{s:16:\"wp_version_check\";a:1:{s:32:\"40cd750bba9870f18aada2478b24840a\";a:3:{s:8:\"schedule\";s:10:\"twicedaily\";s:4:\"args\";a:0:{}s:8:\"interval\";i:43200;}}}s:7:\"version\";i:2;}', 'yes') ON DUPLICATE KEY UPDATE <code>option_name</code> = VALUES(<code>option_name</code>), <code>option_value</code> = VALUES(<code>option_value</code>), <code>autoload</code> = VALUES(<code>autoload</code>) made by require_once('wp-admin/admin.php'), require_once('wp-load.php'), require_once('wp-config.php'), require_once('wp-settings.php'), do_action('init'), call_user_func_array, wp_schedule_update_checks, wp_schedule_event, _set_cron_array, update_option, add_option
[02-Jun-2014 11:15:07] WordPress database error Duplicate entry 'cron' for key 'option_name' for query INSERT INTO <code>wp_options</code> (<code>option_name</code>, <code>option_value</code>, <code>autoload</code>) VALUES ('cron', 'a:2:{i:1401707707;a:1:{s:17:\"wp_update_plugins\";a:1:{s:32:\"40cd750bba9870f18aada2478b24840a\";a:3:{s:8:\"schedule\";s:10:\"twicedaily\";s:4:\"args\";a:0:{}s:8:\"interval\";i:43200;}}}s:7:\"version\";i:2;}', 'yes') ON DUPLICATE KEY UPDATE <code>option_name</code> = VALUES(<code>option_name</code>), <code>option_value</code> = VALUES(<code>option_value</code>), <code>autoload</code> = VALUES(<code>autoload</code>) made by require_once('wp-admin/admin.php'), require_once('wp-load.php'), require_once('wp-config.php'), require_once('wp-settings.php'), do_action('init'), call_user_func_array, wp_schedule_update_checks, wp_schedule_event, _set_cron_array, update_option, add_option
I tried repairing the wp_options table using phpMyAdmin as it says there is a crash there. This didn’t help though!