Canvas Widget installation issues


I am really new to vaadin but I absolutely love this framework!
Now I try to get the Canvas widget working. Unfortunately I run into trouble. All I did was download the canvaswidget-1.1.jar and to place it in my WEB-INF/lib folder.
When vaadin compiles the client I get this error message:

Loading inherited module 'org.vaadin.hezamu.canvas.widgetset.CanvasWidgetset'
   Loading inherited module ''
 Unable to find 'com/google/gwt/widgetideas/GWTCanvas.gwt.xml' on your classpath; could be a typo, or maybe you forgot to include a classpath entry for source?
 Line 6: Unexpected exception while processing element 'inherits' (see previous log entries)

I tried to figure out the reason but according to the manual there is nothing else to do than what I did. The rest is handled by the eclipse plugin. I use vaadin 6.8.7. Could it be a compatibility issue ?

Thank you for your help,


You have to include library gwt-incubator-X.XX.jar. This will solve your problem. The library includes GWTCanvas.gwt.xml