4.9.1.1

20 April 2026

C4DtoA 4.9.1.1 is a bugfix release using Arnold 7.5.1.1. For the full list of features in C4DtoA 4.9.1, see the C4DtoA 4.9.1 release notes.

Installation

Download Arnold for Cinema 4D from your Autodesk Account. See Download Arnold for more information about downloading C4DtoA from your Autodesk Account.
Follow these installation instructions.

ARNOLD-14348 - Fixed random crash while rendering on ARM64 machines
ARNOLD-17656 - Fixed a hang when replacing a shader that was connected to a light
ARNOLD-17660 - AiProceduralViewport crashes with implicit nodes
usd#2607 - Updating light shaders interactively hangs the render
usd#2613 - Missing clip files and UDIMs from search path when collecting scene assets
usd#2615 - Export material bindings for volume nodes in the volume context
usd#2589 - Implement scene index dependencies when materials get added or removed
usd#2582 - Arnold-disabled nodes should not be authored to USD
usd#2433 - Support interactive changes of shaders connected to quad lights
usd#2611 - Support exporting geometries that get added during a sequence

Windows 10 or later, with the Visual Studio 2019 redistributable.
Linux with at least glibc 2.28. This is equivalent to RHEL/Rocky 8.
macOS 12 or later.
x86-64 CPUs need to support the SSE4.1 instruction set. Apple Mac models with M series chips are natively supported.
GPU rendering and OptiX denoising work on Windows and Linux only, and require an NVIDIA GPU with the Maxwell architecture or later.
- On Linux, we recommend 590.48 or higher drivers.
- On Windows, we recommend 591.28 or higher drivers.
Intel OIDN runs on all CPUs. GPU support is limited to:
- macOS
  - Apple silicon GPUs (M1 and newer)
- Linux
  - NVIDIA GPUs with Turing, Ampere, Ada Lovelace, Hopper, and Blackwell architectures
- Windows
  - Intel Xe and Intel Arc dedicated and integrated GPUs
  - NVIDIA GPUs with Turing, Ampere, Ada Lovelace, Hopper, and Blackwell architectures
  - AMD GPUs with RDNA 2, RDNA 3, RDNA 3.5, and RDNA 4 architectures