仿真錯誤求助

Project14 (D:/Longevity/My Documents/存檔/)
  HFSSDesign1
    [warning] HFSSDesign1: Solutions have been invalidated. Undo to recover. (10:55 下午  十月 24, 2008)
    [error] Fast sweep setup, process abc3d : "Port1" mode 1 crosses cut-off in the specified fast sweep range.  Consider splitting the sweep into multiple ranges.  Use a port-only discrete sweep to locate the cut-off frequency. (10:57 下午  十月 24, 2008)
    [error] Simulation completed with execution error on server: Local Machine. (10:57 下午  十月 24, 2008)

我在仿真下面的圖時出現了上面這樣的問題，我是新手，希望高手指點下