HydraCARDs | <p>Revit could not complete the external command.... Revit...InvalidOperationException: Entity is invalid. Autodesk.Revit.DB.ExtensibleStorage.Entity.Get[FieldType](StringfieldName, DisplayUnitType displayUnits HCAD_Revit

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Revit Based All (Ribbon/Toolbar/Location)

Button: Walker Function: Open Error Type: Command Failure for External Command

Description:

Revit could not complete the external command.... Revit...InvalidOperationException: Entity is invalid. Autodesk.Revit.DB.ExtensibleStorage.Entity.Get[FieldType](StringfieldName, DisplayUnitType displayUnits HCAD_Revit_Tools....

Solutions:

Cause:

1. System Walker does not work because the water supply annotation was copied into model instead of inserted from HydraCALC Add-in. 2. Setup not run before using the Walker. 3. Model has one (or more) legacy NSP Annotations in it.

Solution:

1. Erase the water supply and insert from the HydraCALC Add-in. JB 9/27/17 2. From any Hydratec Ribbon, pick the SetUp button. JB 1/23/18 3. Ver 6.0 +...Erase all instances of HydraCAD NSP annotations in the model. JB 1/24/18

Updated: Sept. 17, 2022, 9:39 p.m. Created: Sept. 27, 2017, midnight