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Being very new to Vaadin, I am just trying to get the basics going, so I am following the Book of Vaadin.
Anyway, after overcoming the "out of memory" problem last night (http://vaadin.com/forum/-/message_boards/message/162813), now I am getting this error from my Chrome browser when trying to run/debug the Calc app when launching from Eclipse... "gwt module 'com.vaadin.terminal.gwt.DefaultWidgetSet' may need to be (re)compiled". The page turns to gray, and then...nothing.