404 - Path /org/eclipse/equinox/org.eclipse.equinox.p2.core/2.1.0.v20110502-1955/org.eclipse.equinox.p2.core-2.1.0.v20110502-1955.pom not found in local storage of repository "Releases" [id=releases]

Path /org/eclipse/equinox/org.eclipse.equinox.p2.core/2.1.0.v20110502-1955/org.eclipse.equinox.p2.core-2.1.0.v20110502-1955.pom not found in local storage of repository "Releases" [id=releases]