Uninstall administration console and re-install
At least that is what support had me do……
From: vantage@yahoogroups.com [mailto:vantage@yahoogroups.com]
Sent: Tuesday, February 17, 2015 4:13 PM
To: vantage@yahoogroups.com
Subject: [Vantage] Can't create Demo DB
Has anyone else run into the problem when you open up the “Add Demo Database” option in the Administration Console there are no tasks to be run it’s just blank? Then you get an error saying “Index outside the bounds of the array” when you hit any button including close.
http://www.erptechreference.com/share/files/DemoDBError.png