widgetset compiling

Hello! I’m trying to compile vaadin widgetset with standart gwt compiler v 2.7.0, Vaadin version - 7.3.6
It does pretty amount of work, but finally falls with errors:

Resolving com.vaadin.shared.ui.ui.UIServerRpc
      Found type 'com.vaadin.shared.ui.ui.UIServerRpc'
         Resolving method resize
            Resolving annotation for com.vaadin.shared.annotations.Delayed
         Resolving method scroll
            Resolving annotation for com.vaadin.shared.annotations.Delayed
...       
Resolving method poll
            Resolving annotation for com.vaadin.shared.annotations.Delayed
   Finding entry point classes
      Tracing compile failure path for type 'com.vaadin.client.ApplicationConfiguration'
         [ERROR]
 Errors in 'jar:file:/home/gh88/Downloads/gwt-2.7.0/src/cl.jar!/com/vaadin/client/ApplicationConfiguration.java'
            [ERROR]
 com.vaadin.client.ApplicationConnection cannot be resolved to a type
         [ERROR]
 Errors in 'jar:file:/home/gh88/Downloads/gwt-2.7.0/src/cl.jar!/com/vaadin/client/ServerConnector.java'

etc… Of course, com.vaadin.client.ApplicationConnection EXISTS (both .java and .class) there! What I’m doing wrong? cl.jar is “fixed” vaadin-client-7.3.6.jar - I just commented “” and packed back as GWT doesn’t work if not.
I appreciate any help!