java.lang.NullPointerException
   at org.netbeans.modules.clearcase.client.Cleartool.checkReady(Cleartool.java:96)
   at org.netbeans.modules.clearcase.client.Cleartool.<init>(Cleartool.java:84)
   at org.netbeans.modules.clearcase.client.ClearcaseClient.ensureCleartool(ClearcaseClient.java:409)
   at org.netbeans.modules.clearcase.client.ClearcaseClient.access$100(ClearcaseClient.java:77)
   at org.netbeans.modules.clearcase.client.ClearcaseClient$CommandRunnable.run(ClearcaseClient.java:219)
   at org.netbeans.modules.clearcase.client.ClearcaseClient.execImpl(ClearcaseClient.java:168)
   at org.netbeans.modules.clearcase.client.ClearcaseClient.exec(ClearcaseClient.java:147)
   at org.netbeans.modules.clearcase.util.ClearcaseUtils.readEntries(ClearcaseUtils.java:354)
   at org.netbeans.modules.clearcase.FileStatusCache.refresh(FileStatusCache.java:307)
   at org.netbeans.modules.clearcase.FileStatusCache.access$200(FileStatusCache.java:73)
   at org.netbeans.modules.clearcase.FileStatusCache$RefreshSupport.refresh(FileStatusCache.java:573)
   at org.netbeans.modules.clearcase.FileStatusCache$1.run(FileStatusCache.java:433)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1418)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1957)