Aggregate install failing with unknown error while running java

Hi Yaw, please help. I am trying to install ODK aggregate 1.5 for window and i get this error "There has been an error. Unknown error while running java -jar.\ODKAggregateAppEngineUpdater.jar
The application will exit now."

I've moved your post from the old topic because it's not clear the problems are related.

Can you answer these questions?

  1. Are you following the instructions at
  2. What version of Windows and Java are you using?
  3. What you have you tried to fix the problem?
  4. Anything else we should know or have? If you have a test form or screenshots or logs, please attach.

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