Installing Vaadin Plug-in in IBM RAD 8.0

I am trying to isntall the plug-in in IBM RAD 8.0 and get the following error. Any help in resolving this isue will be appreciated.

An error occurred while collecting items to be installed
session context was:(profile=bootProfile, phase=org.eclipse.equinox.internal.p2.engine.phases.Collect, operand=, action=).
Artifact not found: osgi.bundle,com.vaadin.integration.eclipse,
Artifact not found: org.eclipse.update.feature,com.vaadin.integration.eclipse,
Artifact not found: osgi.bundle,com.vaadin.wysiwyg.eclipse,

I’m sorry, but the Vaadin plugin doesn’t support custom Eclipse versions. In this case the plugin can’t find dependencies that it needs, because the host eclipse doesn’t include them.