Hi Pawan,

OK, I did a small upgrade session myself and did not encounter any issues (apart from having to set numTokens: 4 in conf/cassandra.yaml).

This is what I did:

1. Start from a fresh janusgraph-full-0.5.3 distribution (so, with an empty db folder)
2. Run bin/janusgraph.sh start
3. Run bin/gremlin.sh and
   graph = JanusGraphFactory.open('conf/janusgraph-cql-es.properties')
   GraphOfTheGodsFactory.load(graph)
   :q
4. Run bin/janusgraph.sh stop
5. Start from a fresh janusgraph-full-0.6.0 distribution (so, with an empty db folder)
6. Copy the db folder from janusgraph-full-0.5.3/db to janusgraph-full-0.6.0
7. Set set numTokens: 4 in conf/cassandra.yaml
8. Run bin/janusgraph.sh start
9. Run bin/gremlin.sh and
   graph = JanusGraphFactory.open('conf/janusgraph-cql-es.properties')
   graph.traversal().V()

Can you reproduce your issue in a similar way?

Best wishes,     Marc