Appion

When I used the test dataset, I got the error below:
getLastFilenameId(); $sessionId=$xmldata->getSessionId(); $filenames=$xmldata->getFilenames(); $viewer = new viewer(); $viewer->setImageId($imageId); $viewer->setSessionId($sessionId); $viewer->addFileSelector($filenames); $javascript = $viewer->getJavascript(); $view1 = new view('Simple Viewer', 'v1'); $view1->setImageReportScript('imgreportxml.php'); $view1->setHistogramScript('imagehistogramxml.php'); $view1->setDownloadScript('downloadxml.php'); $view1->setImageScript('getimgxml.php'); $view1->setPresetScript('getpresetxml.php'); $view1->displayPTCLIcon(false); $view1->displayTagIcon(false); $view1->displayACEIcon(false); $view1->displayTargetIcon(false); $view1->displayExportLink(false); $view1->displayInfoIcon(false); $view1->setSize(512); $viewer->add($view1); $javascript .= $viewer->getJavascriptInit(); login_header('image viewer', $javascript, 'initviewer()'); echo ' [Troubleshoot] '; ?> View XML data » display(); login_footer(); ?>

does it means I lost some packages or java......