Eclipse Installation Issue

I am running Ubuntu 11.04 for development, and I was going to use the Vaadin plugin for Eclipse, and I successfully installed that plugin, but when I attempt to create a new Vaadin Project, I get this error.


The selected wizard could not be started.
Plug-in "com.vaadin.integration.eclipse" was unable to instantiate class "com.vaadin.integration.eclipse.wizards.VaadinProjectWizard".
com/vaadin/integration/eclipse/configuration/VaadinProjectCreationDataModelProvider

Is there any way to fix this?

This sounds similar to this thread
http://vaadin.com/forum/-/message_boards/view_message/669281

Which Eclipse version are you using?

The problem is not clear to me, but also try to update the Vaadin plug-in and WTP plug-ins to the latest versions if you haven’t done so already.