Upgrade from 6.0.1 to 6.0.2/6.0.3

Steps to reproduce

delete version 6.0.1 from server, keeping config and data folders
upload version 6.0.2 or 6.0.3
open webpage -> blank page
Expected behaviour

Open the usual view, with files and folders, or at least the login page.

Actual behaviour

Blank page.

Server configuration

Operating system:

Web server:

Database: mySql PHP version: 5.4 ownCloud version: (see ownCloud admin page) 6.0.2 or 6.0.3 Updated from an older ownCloud or fresh install: Updated from 6.0.1 List of activated apps: Lots of them. The content of config/config.php:

<?php
define('DEBUG',true);
$CONFIG = array (
  'installed' => true,
  'dbtype' => 'mysql',
  'dbname' => 'dvg_owncloud',
  'dbuser' => '[username]',
  'dbpassword' => '[password]',
  'dbhost' => 'mysql.[URL]',
  'dbtableprefix' => 'oc_',
  'passwordsalt' => '[passwordsalt]',
  'forcessl' => false,
  'blacklisted_files' => 
  array (
    0 => '.htaccess',
  ),
  'overwritehost' => '',
  'overwriteprotocol' => '',
  'overwritewebroot' => '',
  'overwritecondaddr' => '',
  'proxy' => '',
  'proxyuserpwd' => '',
  'theme' => '',
  'default_language' => 'en',
  '3rdpartyroot' => '',
  '3rdpartyurl' => '',
  'defaultapp' => 'files',
  'knowledgebaseenabled' => true,
  'appstoreenabled' => true,
  'appstoreurl' => 'http://api.apps.owncloud.com/v1',
  'mail_domain' => 'example.com',
  'mail_smtpdebug' => false,
  'mail_smtpmode' => 'sendmail',
  'mail_smtphost' => '127.0.0.1',
  'mail_smtpport' => 25,
  'mail_smtptimeout' => 10,
  'mail_smtpsecure' => '',
  'mail_smtpauth' => false,
  'mail_smtpauthtype' => 'LOGIN',
  'mail_smtpname' => '',
  'mail_smtppassword' => '',
  'memcached_server' => 
  array (
    0 => 'localhost',
    1 => 11211,
  ),
  'trashbin_retention_obligation' => 30,
  'trashbin_auto_expire' => true,
  'allow_user_to_change_display_name' => true,
  'appcodechecker' => '',
  'updatechecker' => true,
  'has_internet_connection' => true,
  'check_for_working_webdav' => true,
  'check_for_working_htaccess' => true,
  'log_type' => 'owncloud',
  'logfile' => '',
  'loglevel' => '',
  'logdateformat' => 'F d, Y H:i:s',
  'logtimezone' => 'Europe/Lisbon',
  'log_query' => false,
  'log_authfailip' => false,
  'log_rotate_size' => false,
  'remember_login_cookie_lifetime' => 1296000,
  'session_lifetime' => 86400,
  'custom_csp_policy' => 'default-src \'self\'; script-src \'self\' \'unsafe-eval\'; style-src \'self\' \'unsafe-inline\'; frame-src *; img-src *; font-src \'self\' data:; media-src *',
  'xframe_restriction' => true,
  'datadirectory' => '/home/[username]/[URL]/data',
  'maintenance' => false,
  'apps_paths' => 
  array (
    0 => 
    array (
      'path' => '/home/[username]/[URL]/apps',
      'url' => '/apps',
      'writable' => true,
    ),
  ),
  'user_backends' => 
  array (
    0 => 
    array (
      'class' => 'OC_User_IMAP',
      'arguments' => 
      array (
        0 => '{imap.gmail.com:993/imap/ssl}INBOX',
      ),
    ),
  ),
  'customclient_desktop' => '',
  'customclient_android' => '',
  'customclient_ios' => '',
  'enable_previews' => true,
  'preview_max_x' => NULL,
  'preview_max_y' => NULL,
  'preview_max_scale_factor' => 10,
  'preview_libreoffice_path' => '/usr/bin/libreoffice',
  'preview_office_cl_parameters' => '',
  'enable_avatars' => true,
  'openssl' => 
  array (
  ),
  'singleuser' => false,
  'instanceid' => 'oc60d7958a82',
  'version' => '6.0.3.1',
);

Are you using external storage, if yes which one: local/smb/sftp/... Dropbox, GDrive, webdav Are you using encryption: no

Client configuration

Browser: Firefox 28/29 Operating system: Windows 8.1

Logs

Web server error log

No errors in log.

ownCloud log (data/owncloud.log)

No errors in log.

Browser log

a) The javascript console log:

The option getPreventDefault() has been discontinued. Use defaultPrevented.

owncloud / core