problem with UI components display using liferay+vaadin


I’m using Eclipse to devellop an application using vaadin (6.6.6) and apache (tomcat-6.0.26).

when a WAR folder is made, I can’t find Vaadin folder inside. Only WEB-INF and META-INF are there ! This generate a bizarre layout (UI components are not visible, background color is white) . When this version is deployed on another machine, it generates an error on the apache, but curiously it is running on the first machine (I means with the incomplete layout).

Please I need a help.