[Eric] Can not debug

[Bin Fan]

When start eric4, in the window of  shell I get the following error
messages:

StdErr: Traceback (most recent call last):
  File
"/Library/Python/2.5/site-packages/eric4/DebugClients/Python/DebugClientThreads.py",
line 194, in <module>
    debugClient.main()
  File
"/Library/Python/2.5/site-packages/eric4/DebugClients/Python/DebugClientBase.py",
line 1900, in main
    self.connectDebugger(port, remoteAddress, redirect)
  File
"/Library/Python/2.5/site-packages/eric4/DebugClients/Python/DebugClientBase.py",
line 981, in connectDebugger
    sock.connect((DebugAddress,port))
  File "<string>", line 1, in connect
socket.error: (49, "Can't assign requested address")

>From the output I get DebugAddress =127.0.0.1, but port =0. Is there
something wrong?
I reinstalled eric4.1.6, same problem happens.

Thanks

Bin Fan
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