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AutoCAD Based 3D Modeling (Ribbon/Toolbar/Location)

Button: Show System Model Error Type: Unhandled Exception

Description:

Raising to 3D and you get this error;

Inline image

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)).

Solutions:

Cause:

This error occurs when raising to 3D, but you would've also received a similar CLSID error when opening any drawing

Solution:

See this HydraCARD for the solution

https://hydracards.hydratecinc.com/cards/card-864

Updated: April 23, 2026, 10:21 a.m. Created: April 23, 2026, 10:21 a.m.