HtoA 4.4.1

Friday 15th November


This is a bug fix release, fixing a regression preventing the export of ass files when expanding procedurals.  

Important information about Arnold GPU (beta)


  1. Get the install files on Solid Angle Downloads.
  2. Follow these installation instructions.


This release uses Arnold and OpenVDB 4.0.0.

Binaries available for the following Houdini, Houdini FX, Houdini Indie and Houdini Education production builds:

  • 16.5.634
  • 17.0.506
  • 17.5.425

and for the following platforms:

  • Linux x86_64 (H16: gcc4.8 and H17: gcc6.3)
  • Windows 7 x64 (H16: vc14 and H17: vc14.1)
  • Mac OS X 10.8+ (clang7.3)


Please note that Houdini Apprentice does not support third-party renderers and thus cannot run HtoA.


  • Fix setUniverse error on windows 10 (htoa#1339)

  • Expand procedurals in the same universe (htoa#1333)

  • Fix for texture baking with camera_projections (htoa#1299)

  • Arnold Material Builder material flag should be on by default (htoa#1330)


See also the Arnold release notes for the full list of core enhancements and fixes.


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