DrH Autodesk engineering tools

DrH/Changelog

What changed, and when.

The manager and the library move on separate clocks. This page tracks the manager. Tool-level changes show as an updated date on each card in the library.

6 September 2026v1.5.9

Navisworks loader rebuilt for every host year

  • Loader assemblies published for Navisworks 2021 through 2027, each matched to its own API.
  • Package manifest now bounds every host explicitly, so a future Autodesk year cannot load a build that was never tested against it.
  • Ribbon refresh no longer needs a restart after adding or removing a tool.
4 September 2026v1.5.7

Revit 2027 and the .NET 10 channel

  • Revit 2027 support added on the .NET 10 runtime channel.
  • DLL tools are now stored per host, so a Revit build of a tool can no longer overwrite the Civil 3D build of the same name.
  • Command discovery reads multiple commands from a single .addin sidecar.
3 September 2026v1.5.4

Diagnostics you can act on

  • New DRHSCAN command reports which hosts DrH attached to and flags conflicts.
  • Import, load, update and run activity all write to one log on the desktop.
  • Failed builds now log the reason instead of exiting silently.
Earlierv1.0 – v1.5

The first year

  • One panel across Civil 3D, Revit and Navisworks with a shared import flow.
  • Local folder imports and the online library, for LISP and DLL packages alike.
  • Icon sidecars: a PNG named after the package becomes the button icon.
  • Updates to the manager that leave installed tools untouched.

Updates are the whole point.

A Pro year covers every release on this page and every tool published alongside it, including support for Autodesk years that ship mid-licence.

current1.5.9
hostsCivil 3D, Revit, Navisworks
years2021–2027