Hi to everyone.
Today i have to install Vaadin and integrate it in liferay.
I follow that installation guide: http://vaadin.com/wiki/-/wiki/Main/Running%20Vaadin%20Mail%20Portlet%20in%20Liferay%205.2.x
The file i installed are:
-vaadin-6.4.8.zip
-mail-portlet-5.3.0.1.war
-vaadin.jar
Liferay version: 5.2.3 - Tomcat 5.5.27
The error i see when i load vaadin mail portlet is showed in the jpg i attached.
Thx