HydraCAD for AutoCAD drawing models imported into AutoCAD or Navis do not show Properties for our custom objects: HydraPIPEs, HydraHEADs and HydraFittings on machines without our software.

Launching AutoCAD causes a hard system crash as it loads some HydraCAD plugins, the last one seen is HCADMainBase.arx. The machine crashes every time — it does not reach the AutoCAD interface. When HydraCAD is uninstalled, AutoCAD launches and runs normally with no crashes.

Opening AutoCAD/Revit/Navis gives Device limit reached message after opening a drawing or model.

Opening AutoCAD/Revit/Navis gives Device limit reached message after opening a drawing or model.

When placing clevis hangers or adjustable ring hangers on a 10-inch pipe drawing in Revit, the hangers render incorrectly with missing 5/8 rods.

When trying to add reference points, none are added and this error shows:

After inserting a valve, it does not appear in the 3D view. There is blank space where the valves should be. 

All building dimensions are inserted into an different layer than the current one.

In Navisworks 2024.2 to Navisworks 2025.3 (possibly a sub-version earlier or later), Properties for appended HydraCAD persistent models do not appear, and a Proxy Object notice is given.

When opening Hydracad you get the following error:

Unhandled exception has occurred in a component in your

application. If you click Continue, the application will ignore this error

and attempt to continue.

Retrieving the COM class factory for component with CLSID

{44D62FAE-67A7-4131-BF38-489CDFE44738} failed due to the

following error: 80070005 Access is denied. (Exception from

HRESULT: 0x80070005 (E_ACCESSDENIED)).

When opening Hydracad you get the following error:

Unhandled exception has occurred in a component in your

application. If you click Continue, the application will ignore

this error and attempt to continue.

Retrieving the COM class factory for component with

CLSID {44D62FAE-67A7-4131-BF38-489CDFE44738}

failed due to the following error: 80070424 The specified

service does not exist as an installed service. (Exception

from HRESULT: 0x80070424).

Raising to 3D and you get this error;

Exception Occured at AddURLToHyperlinks :: HydraHeads

System.Runtime.InteropServices.COMException (0x80040154): Retrieving the

COM class factory for component with CLSID

{44D62FAE-67A7-4131-BF38-489CDFE44738} failed due to the following error:

80040154 Class not registered (Exception from HRESULT: 0x80040154

(REGDB_E_CLASSNOTREG)).

When claiming an authorization, you get this error;

Hydratec Security Error

FAILED CALL TO SERVER (to Activate): Could not parse request body into json: Could not parse payload into json: illegal unquoted character ((CTRL-CHAR, code 10)): has to be escaped using backslash to be included in string value at [Source: REDACTED ('StreamReadFeature.INCLUDE_SOURCE_IN_LOCATION" disabled): line: 1. column: 104]

Trying to get an elevation but the results are either 0 or an incorrect value

This result should report 3000mm, instead it reports 230mm

This should report 3000mm, not 0mm

Changing the characteristics of wipeouts.

Change the transparency of the wipeout mask from zero to 50%, or remove the wipeout completely.

0% TRANSPARENCY

50% TRANSPARENCY

DELETED WIPEOUT MASK

Auto Stocklist hangs / freezes without a stocklist shown, or displays this error: 
Processing Autolist... (Not Responding) ... Adding data to .HLF file

Trying to insert a fabricated pipe via HydraLIST doesn't show any outlets, ski poles, etc.

As shown in HydraLIST;

Inserted into HydraCAD;

Note, no GOL is shown.

When running AutoLIST, partway through you get the error;

DAO Server - Error RSOpen

Call from AutoList::LookupValueInMainsTable

SQLParams

When selecting Valve Selector in the 3D Fittings window, you get the error message;

SOURCE: System.Private.CoreLib

MESSAGE: An item with the same key has already been added. Key:

Runtime Error 3167. Error message: Record has been deleted