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 selecting the pipe to move in the move line command, you get the error;

Error!!  Restart command, and select a different pipe..

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

AutoCAD Error Aborting FATAL ERROR: Unhandled Access Violation Reading 0x00e0 Exception at [hex code here] Acad 2019 hex code; 2D92713Eh Fatal Error

 Hex code a51b726eh

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

When attempting to 'Start AutoLIST' (SAL command), user gets an AutoCAD 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

Customer reports that when trying to move an object by exposing the grips, the process takes a very long time and almost seems like AutoCAD freezes.

"Clicking blocks and dragging by node, doing pipe sizings, etc..."

Copy and Paste takes forever, slow process

Unhandled exception has occurred in a component ... eBadLineTypeName

The Pretty Pipe setup window will not open up.

Unable to select ceiling grid intersections when using Align Crosshairs with Ceiling