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Ribbon/Toolbar (software) Button Function Error Type Description
Ribbon/Toolbar (software) Button Function Error Type Description
Card 1486 View HydraCALC (Standalone) Calculation Summary Calculation Results None

The calculation results shows a pressure requirement which does not show up in the Final Calculation printout

In the example below, 104.344 psi is nowhere in the Calculation Sheets of the printout.


Card 1485 View Portal (Website) None None None

When trying to sign-in to the Hydratec Portal after Confirming your account and entering a password, this error appears when trying to sign in. 

Despite clicking Confirm Account on the Invitation email, and setting up an account and password, an account was never actually created. 


Card 1484 View Installation (Security and Licensing) None None Error 1723

Error 1723. There is a problem with this Windows

Installer package.  GetDriveLetter_Action can't find a .dll.


Card 1483 View HydraCAD (Revit Based) Hangers Brace None

When trying to use the Hangers tool, and insert a Brace, it only allows for a single brace to be added.
It doesn't allow for continuous insertion as intended. 

Card 1392 View HydraCAD (Revit Based) Import from the latest Toolbox None None

After attempting to download the Latest Toolbox, a warning appears saying the file cannot be opened. 
Tells user to delete toolbox .rvt file and try again, but that does not work. 


Card 1091 View Installation (Revit Based) None None None

Greyed out options in the Addin Assistant and ribbons do not appear in Revit

Card 1469 View Piping (AutoCAD Based) Define Pipe Elevations None Unhandled Exception

Error occurs when using some commands.

Autodesk has released AutoCAD 2025.1.4 & 2026.1.2 updates which breaks HydraCAD. It includes a major programming change by Autodesk that will require a lot of work and a large update by us. That update is being worked on right now, along with a version of HydraCAD for AutoCAD 2027. All are now affected by essentially the same programming change.


BinaryFormatter serialization and deserialization are disabled within this application. See  https://aka.ms/binaryformatter for more information.


Other commands with this error;

Sprinkler Layout dialog (SL command)

Default Dialog Location (DDL command)

Card 1482 View HydraLIST (Revit Based) Auto Stocklist None None

Flex Pipes on Armovers list as TG pipes instead of TT 

Card 55 View Calculations (AutoCAD Based) Start Autocalcs None Unhandled Exception

Unhandled exception: Input string not in correct format

Card 1452 View Launching HydraCAD (AutoCAD Based) None None Unhandled Exception

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).

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