ARIS Express wont load - PngEncoder.jar not in GZIP format

Here is the exception I get when trying to load ARIS express. It all worked well yesterday morning. However after 1 pm Jan 7 it consistently throws the below error.

com.sun.deploy.net.FailedDownloadException: Unable to load resource: (http://download.ariscommunity.com/PngEncoder.jar?version-id=1.0&current-version-id=1.0, 1.0)

                at com.sun.deploy.net.DownloadEngine.actionDownload(Unknown Source)

                at com.sun.deploy.net.DownloadEngine.downloadResource(Unknown Source)

                at com.sun.deploy.cache.ResourceProviderImpl.getResource(Unknown Source)

                at com.sun.deploy.cache.ResourceProviderImpl.getResource(Unknown Source)

                at com.sun.javaws.LaunchDownload$DownloadTask.call(Unknown Source)

                at java.util.concurrent.FutureTask.run(Unknown Source)

                at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)

                at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

                at java.lang.Thread.run(Unknown Source)

java.util.zip.ZipException: Not in GZIP format

 at java.util.zip.GZIPInputStream.readHeader(Unknown Source)

 at java.util.zip.GZIPInputStream.<init>(Unknown Source)

 at java.util.zip.GZIPInputStream.<init>(Unknown Source)

 at com.sun.deploy.net.HttpDownloadHelper.download(Unknown Source)

 at com.sun.deploy.cache.Cache.downloadResourceToTempFile(Unknown Source)

 at com.sun.deploy.cache.Cache.downloadResourceToCache(Unknown Source)

 at com.sun.deploy.net.DownloadEngine.actionDownload(Unknown Source)

 at com.sun.deploy.net.DownloadEngine.downloadResource(Unknown Source)

 at com.sun.deploy.cache.ResourceProviderImpl.getResource(Unknown Source)

 at com.sun.deploy.cache.ResourceProviderImpl.getResource(Unknown Source)

 at com.sun.javaws.LaunchDownload$DownloadTask.call(Unknown Source)

 at java.util.concurrent.FutureTask.run(Unknown Source)

 at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)

 at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

 at java.lang.Thread.run(Unknown Source)

 

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EDIT: on reinstallation, the error is slightly different:

java.io.FileNotFoundException: http://download.ariscommunity.com/PngEncoder.jar

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