Don't use the plugin from google. Use this one instead : https://github.com/gwt-plugins/gwt-eclipse-plugin--
Watch the YouTube movies for instructions : https://www.youtube.com/watch?v=DU7ZQVLR5Zo&list=PLBbgqtDgdc_TqzA-qXrjgTFMC_6DKAQyT
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