请教ADS Harmonic Balance 的仿真问题！！

RFICbeginner

我是菜鸟， 仿真的时候总是有 warning，

Warning detected by HPEESOFSIM during DC analysis `Osc1'.
    While evaluating `dcSourceLevel':
        ln() changed return type during a simulation.  Not supported..
Warning detected by HPEESOFSIM during HB analysis `HB1'.
    While evaluating `sourceLevel':
        ln() changed return type during a simulation.  Not supported..
Warning detected by HPEESOFSIM during spectral noise analysis `HB_NOISE'.
    While evaluating `time':
        ln() changed return type during a simulation.  Not supported..
请问各位大侠， 这是什么原因啊？ 我查了很久没找出问题， 很郁闷 ：（。请指点一下吧，谢谢！！


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