This error may start out as "Could not load default information for the Pipe Model settings"

But will then turn into an AutoCAD fatal error.

When selecting the Navis Toolkit then the SETUP button, you get the error;

AutoCAD Error Aborting

Fatal Error: Unhandled Access Violation 

Retrieve HydratecRevitContent is missing from the Add-Ins - Hydratec pulldown menu in Revit

Sprinkler heads were not properly defined with a part number within the HydraCAD drawing. Therefore, Revit used a default sprinkler head symbol which happened to be a pendent sprinkler symbol. Revit

1. Our Addin file is looking in the wrong location for our Revit tools Revit

When opening a 3D persistent model drawing, user gets the error and Acad crashes INTERNAL ERROR Dialog box v53.04 + v54.01

When in the Pipe Model Settings window (Setup window in Navis toolkit), the user cleared the text box for "Layer Name prefix" Dialog Box Acad 2016+

Date set in "options" of navis do not match version of Autocad Missing objects Navis

AutoCAD entities too far out in space for revit to handle

Unknown, but likely that creation of Revit content will still be accomplished.

1. Loading Revit content into a non-MEP template (ie Construction or Architectural template) Revit