Error using GWT openlayers MapWidget
Im trying to create a website with a map using GAE and the GWT openlayers library. Im trying to implement it by using a MapWidget in the SiteNameWidget.ui.xml file, but i get the error below. 

I've managed to get it working by using the RootPanel.get().add(MapWidget) approach, but i would like to be able to use the XML file approach, as is seems to be easier to manipulate the layout this way.

Anyone?

>org.gwtopenmaps.openlayers.client.MapWidget has no default (zero args) constructor. To         fix this, you can define a @UiFactory method on the UiBinder's owner, or annotate a constructor of MapWidget with @UiConstructor.

Error using GWT openlayers MapWidget
===

Im trying to create a website with a map using GAE and the GWT openlayers library. Im trying to implement it by using a MapWidget in the SiteNameWidget.ui.xml file, but i get the error below. 

I've managed to get it working by using the RootPanel.get().add(MapWidget) approach, but i would like to be able to use the XML file approach, as is seems to be easier to manipulate the layout this way.

Anyone?

>org.gwtopenmaps.openlayers.client.MapWidget has no default (zero args) constructor. To         fix this, you can define a @UiFactory method on the UiBinder's owner, or annotate a constructor of MapWidget with @UiConstructor.
