Error no valid license key for current DNS/IP .....

When I am trying to upload the image using image unloader the message
giving 'No valid license key for current DNS/IP address'. But I have a
valid domain License.
I have a Image Uploader 5.7

The script is:

<script language="javascript" src="iuembed.js"></script>
<script language="javascript">
var iu = new ImageUploaderWriter("ImageUploader", 759, 550);

// If you do not want to use ActiveX or Java version, set the appropriate
// property to false.
iu.activeXControlEnabled = true;
iu.javaAppletEnabled = true;

iu.activeXControlCodeBase = "ImageUploader5.cab";
iu.javaAppletCodeBase="./";

iu.addParam("PaneLayout", "TwoPanes");
iu.addParam("ShowDebugWindow", "true");
iu.addParam("AllowRotate", "false");
iu.addParam("BackgroundColor", "#ccccff");

iu.addParam("LicenseKey", "xxxxx-xxxxx-xxxxx-xxxxx-xxxxx");

iu.addParam("UploadThumbnail1FitMode", "Fit");
iu.addParam("UploadThumbnail1Width", "120");
iu.addParam("UploadThumbnail1Height", "120");
iu.addParam("UploadThumbnail1JpegQuality", "60");

iu.addParam("Action", "upload.php");

//Configure URL where to redirect after upload.
iu.addParam("RedirectUrl", "gallery.php");

//...other params...
// As soon as you call this method, all necessary HTML code is inserted
// into the page on the current position. Alternatively, you can
// get the string with appropriate HTML code using the getHtml method,
// and write it to the necessary position manually (maybe with some modifications).
iu.writeHtml();
</script>


Help me please

Is it possibile to change my Imageuploader into Java?
Because i want to use in Firefox and Internet Explorer.

Thanks
bye

Hi,
I wrote a sales@aurigma.com but got no answer.
Please if you can give me an answer as soon as possible is important.
I would like to replace the ActiveX software to a java.

Thank you