HFSS错误：Too many conductors touch port

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[font=]    [info] Port refinement, process hf3d: Too many conductors touch port '1'.  There should be one conductor for each terminal, with one additional reference conductor.  Multiple disconnected reference conductors may lead to incorrect solutions (5:42:43 下午  十二月 07, 2011)
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[font=]    [info] Discrete solution, process hf3d: Too many conductors touch port '1'.  There should be one conductor for each terminal, with one additional reference conductor.  Multiple disconnected reference conductors may lead to incorrect solutions (5:42:45 下午  十二月 07, 2011)
[font=]    [info] Discrete solution, process hf3d: Too many conductors touch port '2'.  There should be one conductor for each terminal, with one additional reference conductor.  Multiple disconnected reference conductors may lead to incorrect solutions (5:42:45 下午  十二月 07, 2011)
[font=]    [error] Discrete solution, process hf3d error: Failed to solve the port 2 due to lack of precision. The likely cause is that the frequency is too low. (5:42:45 下午  十二月 07, 2011)
[font=]    [error] Unable to create child process: hf3d. (5:42:45 下午  十二月 07, 2011)
[font=]    [error] Simulation completed with execution error on server: Local Machine. (5:42:45 下午  十二月 07, 2011)
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我用的是HFSS 12.0，采用Waveport，waveport设置其中一条线路为reference conductor，另一条为信号线路，仿真报错如上所述，烦请高手帮忙解决， thanks in advance！

端口处是不是要隔开啊

同求

可是设置为集总端口