slave cannot connect to master

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      I am launching the slave via jnlp on the same windows machine for testing
      purposes. But it never becomes "online" and remains "offline", with this error
      message:

      INFO: Accepted connection #4 from /127.0.0.1:2479
      Exception in thread "Thread-22" java.lang.NullPointerException
      at java.io.Writer.<init>(Unknown Source)
      at java.io.OutputStreamWriter.<init>(Unknown Source)
      at java.io.PrintWriter.<init>(Unknown Source)
      at hudson.model.Slave$ComputerImpl.setChannel(Slave.java:306)
      at
      hudson.TcpSlaveAgentListener$ConnectionHandler.run(TcpSlaveAgentListener.java:151)

            Assignee:
            Unassigned
            Reporter:
            carlo_bonamico
            Archiver:
            Jenkins Service Account

              Created:
              Updated:
              Resolved:
              Archived: