Hydratec Inc.

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Revit Based HydraCALC (Ribbon/Toolbar/Location)

Button: Hydraulic Calculations Function: Continue

Description:

Calc process stops at step 1a.4 and Runtime Error 5 displays


Solutions:

Cause:

There was an issue with recent Hydratec for Revit Complete Installs that cause this error when attempting to run Hydraulic Calculations.
Solution:
  1. Click: [Here] to be brought to an up-to-date and working install of HydraCALC Standalone.
  2. You will be asked to sign-in  to your Sharefile user account to be able to download, please do so. 
  3. Look in the main folder for the most recent HydraCALC V50 Install, in this example it is HydraCALC V50.55 Rev4 Install (Build 6.2.25.1).zip
  4. Click / select it and press Download on the right-hand side.
  5. Close Revit if you haven't already done so, right click the HydraCALC Install .zip file from the Download folder (or wherever you had it install to) and extract it.
  6. In the folder it just created due to extraction, look for Setup.exe, right click and select 'run as administrator'
  7. Follow the prompts to install HydraCALC. After completion, you should no longer be receiving Runtime Error 5.


If, however, this error does persist, please feel free to contact us at RevitSupport@HydraCAD.com

Updated: Oct. 9, 2025, 2:28 a.m. Created: Oct. 8, 2025, 11:56 p.m.