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*Error* putprop: first arg must be either symbol, list, defstruct or user type - nil

wgtkan

Hello,

When I try to instantiate a transistor, I get the following error:

*Error* putprop: first arg must be either symbol, list, defstruct or user type - nil
*WARNING* (SCH-1156): CDF parameter function has a problem.
("nmos4")

My virtuoso version is:sub-version IC6.1.8-64b.500.1

I looked up the forum and there was similar issue years back as posted here:https://community.cadence.com/cadence_technology_forums/f/custom-ic-skill/22865/launch-lehicreateinst-it-shows-error-putprop-first-arg-must-be-either-symbol-list-defstruct-or-type-nil

I tried the suggested methods but no luck.

Thank you so much.

  • Andrew Beckett

    Can you try doing:

    tracelength=tracelevel=_stacktrace=50

    and then using the schematic editor create instance command (the other post was about layout, so isn't directly applicable). This seems to be a bug in one of the CDF callbacks of the component you're instantiating, so it's very likely to be specific to the PDK or component you're using, rather than a Virtuoso bug.

    I'm hopeful that the above might give more of a clue as to which callback function is failing. If that doesn't help, you might also need to do:

    sstatus(errsetTrace t)

    and try again. Please post the CDS.log file entries you see having done this...

    Regards,

    Andrew.

  • nktty
    in reply to Andrew Beckett

    Hi Andrew, I tried using slicer command but receive error. Do you have any idea on how to fix this?  ->*Error* putprop: first arg must be either symbol, list, defstruct or user type - array@0x2bd0ad0a038

  • Andrew Beckett
    in reply to nktty

    I see from your other post that you’re using Allegro. The root cause will therefore be different than this - which was coming from Virtuoso. I moved your other post into the correct forum.

    Andrew

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