title: Titan server start fails
body: <p>I see the following message when starting titan-server: </p>
  
  <pre><code>Caused by: InvalidRequestException(why:Keyspace names must be case-insensitively unique ("titan" conflicts with "titan"))
  at org.apache.cassandra.thrift.Cassandra$system_add_keyspace_result.read(Cassandra.java:33158)
  at org.apache.thrift.TServiceClient.receiveBase(TServiceClient.java:78)
  at org.apache.cassandra.thrift.Cassandra$Client.recv_system_add_keyspace(Cassandra.java:1408)
  at org.apache.cassandra.thrift.Cassandra$Client.system_add_keyspace(Cassandra.java:1395)
  at com.netflix.astyanax.thrift.ThriftClusterImpl$9.internalExecute(ThriftClusterImpl.java:250)
  at com.netflix.astyanax.thrift.ThriftClusterImpl$9.internalExecute(ThriftClusterImpl.java:247)
  at com.netflix.astyanax.thrift.AbstractOperationImpl.execute(AbstractOperationImpl.java:60)
  ... 26 more
  </code></pre>
  
  <p>Here is how i start it.</p>
  
  <pre><code>~/titan-server-0.4.0$ bin/titan.sh -c cassandra-es start
  </code></pre>
  
  <p>What am i missing? Thanks for any help.</p>
  
  <p>Of course, After I run </p>
  
  <pre><code>titan.sh -c cassandra-es clean 
  </code></pre>
  
  <p>and it starts up just fine. Does that mean there was something wrong with my data.</p>