/**
  * @see Page::show()
  */
 public function show()
 {
     $wcfPackageID = WCFACP::getWcfPackageID();
     // check package installation queue
     if ($wcfPackageID == 0) {
         PackageInstallationQueue::checkPackageInstallationQueue();
     }
     if (WCFACP::getWcfPackageID() == PACKAGE_ID) {
         $packages = WCF::getCache()->get('packages');
         foreach ($packages as $packageID => $package) {
             break;
         }
         if (isset($packageID) && $packageID != PACKAGE_ID) {
             HeaderUtil::redirect('../' . $packages[$packageID]['packageDir'] . 'acp/index.php' . SID_ARG_1ST, false);
             exit;
         }
     }
     // show page
     parent::show();
 }