Reactions User Guide



Download Windows Installer
Installation Instructions

System Requirements

  • Windows 8.1 or later
  • GPU simulation requires an Nvidia GPU with CUDA CC 3.5 or later (see
  • (optional) Cinema 4D R20 or later
  • (optional) Redshift v3.0.53 or newer.


  • [C4D] Fixed hang when using split viewport.
  • [C4D] Fixed: 3rd party renderers did not update scene correctly via Legacy Render Bridge.
  • [CrashHandler] Write crash dumps before showing error message rather than after.
  • [CrashHandler] Some threads were not handled, leading to missing messages/dumps.
  • [Graph] Fixed crash on quick interactive updates of some node configs.
  • [Installer] Upgrade installs did not work correctly.
  • [Rake] Fixed launch error, in some cases crash, on CUDA CC8.6 (RTX 30 series) with some driver versions.
  • [Volume] Fixed crash when using CPU compute in some cases.