18 February 2019


This is a bug fix release, fixing an alembic packed primitive issue.


  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
  • 17.0.416
  • 17.0.459
  • 17.0.506
  • 17.5.173


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.


  • Crash with alembic packed primitives (#1174)

  • Fix operator export for custom operators (#1169)

  • Better logs when geometryId unavailable (#1168)

  • Optimise performance with multiple light objects and change default light shape (#1184)

  • Default color space for lights (#1182)

  • Fix error when mesh_light is missing a mesh (#1187)

  • Error translating ROP network with relative path in Fetch ROP (#1175)

  • Only show license log when licensing fails (#1172)

  • Pass number of threads to hick (#1170)


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


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