[Qucs-help] Harmonic balance problem

[<ign...@es...>]

Hi all,

I get the following error when perfoming a harmonic balance simulation on any circuit including any kind of transistor:

Error occurred during simulation on Monday ..blablabla

Warning:HB1: during TI inversion
exception stack
005:no pivot !=0 found during Crout LU decomposition.

Any ideas? Is Harmonic balance well supported within QUCS?

Thanks!

Nacho.