error during PSS : assertion failed

I am getting the following error during PSS analysis -

Internal error found in spectre during periodic steady state analysis `pss2Tones'. Please run `getSpectreFiles' or send the netlist, the spectre log file, the behavioral model files, and any other information that can help identify the problem to support@cadence.com.
FATAL (CMI-2010): Assertion failed in file `fbNonlinear.cc' at line 210.
FATAL (SPECTRE-21): Assertion failed.

Any idea how to solve this problem.

with regards,
Sandeep

Hi Sandeep,
I am facing the same problem ! Did you get any way out?
Regards,
Shahriar

It might be a modelling problem..