I can open most of revit files in Simulate 2023. But for some files, I get following error:
Knowledge base article hints that it can be file specific issue, but it doesn't provide any troubleshooting steps. Other suggestion is to reinstall Simulate, which didn't help.
Generated log file has following contents:
System.NullReferenceException: Object reference not set to an instance of an object.
at NavisWorks20.LayerGroupTree.BuildFamilyTree(ElementInfo info)
at NavisWorks20.LayerGroupTree.Hierarchize(NwcHolder<LcNwcGroup> instance, ElementInfo info)
at NavisWorks20.LayerGroupTree.Rationalise(Boolean gen_ids, Boolean divide_levels, LcNwcScene* scene, LcNwcGroup* group)
at NavisWorks20.LcIRevitBase.AddLevelTree(Document doc, Dictionary`2 levels, LcNwcGroup* parent)
at NavisWorks20.LcIRevitBase.ConvertToNWData(String created_view_name)
at NavisWorks20.LcIRevitBase.ExportDocument(String& return_message, ElementSet elements, LcIRevitParameters* params)
Don't open the RVT file directly. Use the adding to create an NWC file. Exporting from Revit to Navisworks | Navisworks Products 2021 | Autodesk Knowledge Network
you need to install the exporter: https://www.autodesk.com/products/navisworks/3d-viewers?_ga=2.229156639.2069206630.1588161527-201563...
DarrenP
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