HydraCARDs | <img style="width: 130px;" src="https://hydracards-storage.s3.amazonaws.com/media/public/django-summernote/2025-03-26/23c70835-b3e5-44fa-917e-32024a305032.png"> No Ribbons / only the HydraCAD Ribbon appears, and no commands work. Revit could not complete the external command. Could not load file or assembly. The system cannot find the specified file. <img style="width: 253px;" src="https://hydracards-storage.s3.amazonaws.com/media/public/django-summernote/2025-03-26/1ed9f839-6710-49b6-b988-a4572700f7c5.png">

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Revit Based Installation (Ribbon/Toolbar/Location)

Error Type: Command Failure for External Command

Description:

No Ribbons / only the HydraCAD Ribbon appears, and no commands work.
Revit could not complete the external command. Could not load file or assembly. The system cannot find the specified file.

Solutions:

Cause:

Hydratec for Revit software was not installed properly, or not installed at all.

Solution:

Rerun the install, or install your software for the first time. If you're missing an install, please feel free to contact support at RevitSupport@HydraCAD.com

If after installing the software successfully, and the Ribbons still do not appear, refer to this HydraCARD and utilize the Hydratec for Revit Add-in Assistant.
https://hydracards.hydratecinc.com/cards/card-32

Updated: March 26, 2025, 9:16 a.m. Created: March 26, 2025, 9:16 a.m.