[padraig]

its caused by a missing:
/opt/zimbra/jetty/work/zimbra/jsp/org/apache/jsp/tag/web/mobile/moAttachments_tag.class

beware of removing /opt/zimbra/jetty/work/* to solve the ssh

system failure: exception during auth {RemoteManager: zimbra.snp.org->zimbra@zimbra.snp.org:22}