Error Report

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Error Code: 
4
Error Message: 
Operation details
Installable Units Reported: 
com.vaadin.designer2.eclipse.feature.group,2.1.1
Detailed Message: 
Cannot complete the install because one or more required items could not be found. Software being installed: Vaadin Plug-in for Eclipse 4.0.0.final (com.vaadin.integration.eclipse.feature.group 4.0.0.final) Missing requirement: Vaadin Plug-in for Eclipse 4.0.0.final (com.vaadin.integration.eclipse.feature.group 4.0.0.final) requires 'org.eclipse.wst.common.project.facet.ui 0.0.0' but it could not be found