java.lang.NullPointerException
   at org.netbeans.modules.clearcase.util.ProgressSupport.setCancellableDelegate(ProgressSupport.java:100)
   at org.netbeans.modules.clearcase.client.ClearcaseClient.execImpl(ClearcaseClient.java:170)
   at org.netbeans.modules.clearcase.client.ClearcaseClient.access$000(ClearcaseClient.java:77)
   at org.netbeans.modules.clearcase.client.ClearcaseClient$1.perform(ClearcaseClient.java:124)
   at org.netbeans.modules.clearcase.util.ProgressSupport.run(ProgressSupport.java:142)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1411)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1991)