Cassandra-shuffle causes NumberFormatException

Using Cassandra-shuffle create, then Cassandra-shuffle en causes a NumbertFormatException :

Extract from output.log

INFO 15:01:28,935 Enabling scheduled transfers of token ranges
INFO 15:01:28,957 Initiating transfer of 3059156119944164299 (scheduled at Tue Sep 10 15:01:19 UTC 2013)
WARN 15:01:28,962 Token 3059156119944164299 changing ownership from /10.36.194.173 to /10.39.67.29
WARN 15:01:28,967 Token 3059156119944164299 changing ownership from /10.36.194.173 to /10.39.67.29
INFO 15:01:28,968 RELOCATING: relocating [3059156119944164299] to 10.39.67.29
INFO 15:01:28,968 RELOCATING: Sleeping 30000 ms before start streaming/fetching ranges
ERROR 15:01:29,331 Exception in thread Thread[GossipStage:8,5,main]
java.lang.NumberFormatException: For input string: ""
at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
at java.lang.Long.parseLong(Long.java:453)
at java.lang.Long.valueOf(Long.java:540)
at org.apache.cassandra.dht.Murmur3Partitioner$1.fromString(Murmur3Partitioner.java:183)
at org.apache.cassandra.service.StorageService.handleStateRelocating(StorageService.java:1490)
at org.apache.cassandra.service.StorageService.onChange(StorageService.java:1180)
at org.apache.cassandra.gms.Gossiper.doNotifications(Gossiper.java:956)
at org.apache.cassandra.gms.Gossiper.applyNewStates(Gossiper.java:947)
at org.apache.cassandra.gms.Gossiper.applyStateLocally(Gossiper.java:905)
at org.apache.cassandra.gms.GossipDigestAckVerbHandler.doVerb(GossipDigestAckVerbHandler.java:57)
at org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:56)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)
ERROR 15:01:30,098 Exception in thread Thread[GossipStage:9,5,main]
java.lang.NumberFormatException: For input string: ""
at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
at java.lang.Long.parseLong(Long.java:453)
at java.lang.Long.valueOf(Long.java:540)
at org.apache.cassandra.dht.Murmur3Partitioner$1.fromString(Murmur3Partitioner.java:183)
at org.apache.cassandra.service.StorageService.handleStateRelocating(StorageService.java:1490)
at org.apache.cassandra.service.StorageService.onChange(StorageService.java:1180)
at org.apache.cassandra.gms.Gossiper.doNotifications(Gossiper.java:956)
at org.apache.cassandra.gms.Gossiper.applyNewStates(Gossiper.java:947)
at org.apache.cassandra.gms.Gossiper.applyStateLocally(Gossiper.java:905)
at org.apache.cassandra.gms.GossipDigestAck2VerbHandler.doVerb(GossipDigestAck2VerbHandler.java:49)
at org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:56)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)