# HB Model to OSM fails on sample files: OS\_PortList BOOST\_ASSERT (LBT 1.10 / OpenStudio 3.10)

**URL:** <https://discourse.ladybug.tools/t/hb-model-to-osm-fails-on-sample-files-os-portlist-boost-assert-lbt-1-10-openstudio-3-10/40898>\
**Category:** ladybug-tools\
**Created:** [November 2, 2026, 3:22pm UTC](https://discourse.ladybug.tools/t/hb-model-to-osm-fails-on-sample-files-os-portlist-boost-assert-lbt-1-10-openstudio-3-10/40898 "2026-11-02T15:22:20Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![tru](https://discourse.ladybug.tools/user_avatar/discourse.ladybug.tools/tru/32/33667_2.png) [@tru](https://discourse.ladybug.tools/u/tru)\
**Post date:** [November 2, 2026, 3:22pm UTC](https://discourse.ladybug.tools/t/hb-model-to-osm-fails-on-sample-files-os-portlist-boost-assert-lbt-1-10-openstudio-3-10/40898/1 "2026-11-02T15:22:20Z")

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Hi

I am getting this error with my Openstudio running the sample definition. Anyone could help to identify the problem?

Thanks in advance

Error message: [BOOST\_ASSERT] \<2\> Assertion oObj failed on line 33164 of auto \_\_cdecl openstudio::createOS\_PortListIddObject::\<lambda\_1\>::operator ()(void) const in file D:\a\OpenStudio\OpenStudio\build\src\utilities\idd\IddFactory\_OpenStudio.cxx.  
[BOOST\_ASSERT] \<2\> Assertion object.type() == IddObjectType::OS\_PortList failed on line 33168 of class openstudio::IddObject \_\_cdecl openstudio::createOS\_PortListIddObject(void) in file D:\a\OpenStudio\OpenStudio\build\src\utilities\idd\IddFactory\_OpenStudio.cxx.

 ![HB Model to OSM](https://discourse.ladybug.tools/uploads/default/original/3X/e/5/e5f009b31912e6f84d7e6b83ac20cae1a84306f8.png)

[shoe\_box\_energy\_model.gh](https://discourse.ladybug.tools/uploads/short-url/yVjcl3Iv20tYWPbRhdtnibxu0Dm.gh) (61.9 KB)