Error #2046 when launching Image Uploader Flash 7.2.2

<form name="aurigma_extra_details" action="http://localhost/aurigma">
  <input type="hidden" name="customer" value="29704676">
  <input type="hidden" name="album" value="35181444">
  <input type="hidden" name="session" value="68fa4cc42a426687b9c45aa1732eb2d3">
  <input type="hidden" name="redirecturl" value="http://localhost:3000/school/2/class/4/upload_status">
  <input type="hidden" name="PassThru2" value="babel.localhost">
</form>
<script src="/js/aurigma/aurigma.imageuploaderflash.js"></script>
<script type="text/javascript">
  var fu = $au.imageUploaderFlash({
    id: 'MultiUploader',
    width: '650px',
    height: '480px',
    licenseKey: "[evaluation key redacted]",
    converters: [
      { mode: "*.*=SourceFile" },
      { mode: "*.*=Thumbnail", thumbnailFitMode: "Fit",
        thumbnailHeight : 500, thumbnailWidth: 500,
        thumbnailJpegQuality: 100
      },
      { mode: "*.*=Thumbnail", thumbnailFitMode: "Fit",
        thumbnailHeight: 120, thumbnailWidth: 120,
        thumbnailJpegQuality: 100
      }
    ],
    metadata: { additionalFormName: 'aurigma_extra_details' },
    uploadSettings: { actionUrl: "http://localhost/aurigma" },
    restrictions: {
      fileMask: [
        ['JPEG Images (*.jpg; *.jpeg; *.jpe)', '*.jpg;*.jpeg;*.jpe']
      ]
    }
  });
  writeHtml();
</script>