24 April 2018


This is a bug fix release, fixing ROP operator subnet traversal, alembic packed primitive time shifts and output AOVs for noice.

  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:


and for the following platforms:

  • Linux x86_64 (gcc4.8)
  • Windows 7 x64 (vc14)
  • Mac OS X 10.8+ (clang7.3)


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

  • Operator ROP subnet traversal (htoa#1014)

  • Alembic time offset support (note this is not yet supported in IPR) (htoa#1016)

  • Add Trial Install License to Arnold > RLM Licensing (htoa #1017)

  • Error generating Output variance AOV for noice (htoa#1013)

  • Catch exceptions in MaterialX operator to not crash with invalid documents (core#6844)

  • Incorrect cooker cache check prevents some upstream operators from cooking (core#6903)

  • Object-To-World transform Uninitialized in OSL (core#6896)

  • Noice should ignore precision errors in depth or normal buffers (core#6900)

  • Procedural load crashing due to invalid nodes (core#6902)

  • Fix crash when optix denoiser DLLs are not found (core#6913)

  • Crash when loading empty polymesh through a procedural (core#6923)

  • Optix denoiser crashes after changing device because buffers still mapped (core#6924)

  • Crash caused by old versions of NVML (core#6928)

  • crash due to an invalid/empty procedural within another procedural (core#6938)


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


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