Here's an update : I just tested a random .jar and it works fine. So I guess that there my problem is something more then including correctly the mongo.jar (which I guess is included correcly).
Just to be sure here is the signle line of code that throws the error and the error it self : Mongo m = new Mongo(); SEVERE: javax.servlet.ServletContext log: Exception while dispatching incoming RPC call com.google.gwt.user.server.rpc.UnexpectedException: Service method 'public abstract java.lang.String com.lma.test.client.GreetingService.greetServer(java.lang.String) throws java.lang.IllegalArgumentException' threw an unexpected exception: java.lang.NoClassDefFoundError: java.net.InetSocketAddress is a restricted class. Please see the Google App Engine developer's guide for more details. Many thanks for any hints :) -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.