key.NonUniqueKeyException: attempting to insert 'subtle'
        at key.Trie.insert(Trie.java:165)
        at key.Trie.insert(Trie.java:157)
        at key.Trie.insert(Trie.java:157)
        at key.Trie.insert(Trie.java:157)
        at key.ShortcutCollection.linkToSecondary(ShortcutCollection.java:125)
        at key.ShortcutCollection.linkToSecondary(ShortcutCollection.java:252)
        at key.ShortcutCollection.ensureTrie(ShortcutCollection.java:206)
        at key.ShortcutCollection.getExact(ShortcutCollection.java:318)
        at key.Container.getExactElement(Container.java:851)
        at key.ConnectingPlayer.run(ConnectingPlayer.java:92)
        at java.lang.Thread.run(Thread.java)


get symbol tag doesn't _always_ return a tag

referenceproperties won't always save their reference correctly - make
sure (for the moment) that it is always set with an absolute id.
