Hydratec Inc.

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Revit Based HydraCAD (Ribbon/Toolbar/Location)

Button: Spacing and Layout Function: Insert Sprinklers Error Type: Command Failure for External Command


Revit could not complete the external command... Object Reference not set to an instance of an object.



An imported sprinkler family has a poorly defined System Classification in the family Connector Element which prevents the sprinkler from connecting to a fitting. This error was also encountered while using the Insert All Pipes option


Open the family in the family editor and change the System Classification to Global. Once finished, then load the edited family into the project.

Updated: July 8, 2024, 3:46 p.m. Created: May 20, 2024, 1:18 p.m.