Exception instead of Dialog Message

Open new Teiid Instance wizard and pressed "Test" button.
EXPECTED: Something like "Connection Failed" dialog message
ACTUAL:
java.lang.RuntimeException: Cannot construct a Teiid server because all Teiid properties are not valid
at org.teiid.designer.runtime.ui.ServerPage.getServer(ServerPage.java:370)
at org.teiid.designer.runtime.ui.ServerPage.handleTestConnection(ServerPage.java:406)
at org.teiid.designer.runtime.ui.ServerPage$5.widgetSelected(ServerPage.java:275)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:234)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4066)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3657)
at org.eclipse.jface.window.Window.runEventLoop(Window.java:825)
at org.eclipse.jface.window.Window.open(Window.java:801)
at org.teiid.designer.runtime.ui.NewServerAction.run(NewServerAction.java:93)
at org.eclipse.jface.action.Action.runWithEvent(Action.java:498)