error when installing into Eclipse

Hi, being new to Vaadin I’m trying first steps and following the
online tutorial :

I’m running into an error:

Cannot complete the install because one or more required items could not be found.
Software being installed: Vaadin Plug-in for Eclipse 3.0.0 (com.vaadin.integration.eclipse.feature.group 3.0.0)
Missing requirement: Vaadin Plug-in for Eclipse 3.0.0 (com.vaadin.integration.eclipse.feature.group 3.0.0) requires 'org.eclipse.wst.common.project.facet.ui 0.0.0' but it could not be found

Any clues what might be wrong?
28703.png

It’s highly recommended to use Eclipse IDE for Java EE Developers. What Eclipse version and package do you have?