新手求助 ubuntu14 32bit VPS 使用混淆端口连接 ss 成功运行一段时间后报错

运行命令是
obfsproxy --data-dir ~/.obfs/ scramblesuit --dest 127.0.0.1:19443 --password M4VYAG4WPJZTIQUAVADEVRLQK56NU3SX server 0.0.0.0:18080 &

报错
2015-09-25 07:58:32,256 [CRITICAL] Unhandled Error
Traceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/twisted/python/log.py", line 84, in callWithContext
return context.call({ILogContext: newCtx}, func, *args, **kw)
File "/usr/local/lib/python2.7/dist-packages/twisted/python/context.py", line 118, in callWithContext
return self.currentContext().callWithContext(ctx, func, *args, **kw)
File "/usr/local/lib/python2.7/dist-packages/twisted/python/context.py", line 81, in callWithContext
return func(*args,**kw)
File "/usr/local/lib/python2.7/dist-packages/twisted/internet/posixbase.py", line 597, in _doReadOrWrite
why = selectable.doRead()
--- <exception caught here> ---
File "/usr/local/lib/python2.7/dist-packages/twisted/internet/tcp.py", line 1067, in doRead
protocol = self.factory.buildProtocol(self._buildAddr(addr))
File "/usr/local/lib/python2.7/dist-packages/obfsproxy/network/network.py", line 380, in buildProtocol
circuit = Circuit(self.transport_class())
File "/usr/local/lib/python2.7/dist-packages/obfsproxy/transports/scramblesuit/scramblesuit.py", line 692, in __init__
ScrambleSuitTransport.__init__(self)
File "/usr/local/lib/python2.7/dist-packages/obfsproxy/transports/scramblesuit/scramblesuit.py", line 60, in __init__
self.srvState = state.load()
File "/usr/local/lib/python2.7/dist-packages/obfsproxy/transports/scramblesuit/state.py", line 47, in load
stateObject = cPickle.load(fd)
cPickle.UnpicklingError: pickle data was truncated