When attempting to use the Check Elevation tool, you get a fatal error

When trying to raise to 3D, the following error message pops up;

Autodesk.AutoCAD.Runtime.Exception: eKeyNotFound

and

Exception Occured at AddURLToHyperlinks::HydraHeads

The drawing will continue to raise up to 3D, but there will be no 3D sprinkler heads shown

When trying to raise to 3D, show model, show system model, you get the error;

Access denied to HydraPipe Utilities

and

System.NullReferenceException: Object reference not set to an instance of an object at HCADexports.RevitConversion.create_hydrapipes_from_db()

The process to make the 3D model takes less than 1 millisecond and says it's successful, but after switching to the isometric view, no 3D pipes have been created.  

Drawing successfully elevated to 3D. No errors were found

ALSO SEE;

HydraCARD: #389

https://hydracards.hydratecinc.com/cards/card-389

When trying to insert a System Boundary, the user gets these messages.

When attempting to 'Show Fittings' (SHF command), user gets an AutoCAD Fatal Error.

Create 3D Model causes a fatal error

 Or no error at all.  Autocad freezes then crashes without an error other than the AutoCAD Error Report

A software problem has caused AutoCAD to close unexpectedly

TOS block looks odd or has unusual insertion point or text is placed far away

Check Elevation Command > after picking a point

Internal error !dbobji.cpp@6861:eNotOpenForWrite

and Autocad closes

Upon starting the Show 3D command (S3D) the drawing immediately switches to SE isometric, reports no errors but no 3D piping is visible.  Even newly drawn pipe won't elevate.

Drawing successfully elevated to 3D. No errors were found

Related HydraCARD: #853

https://hydracards.hydratecinc.com/cards/card-853