4.8.2.1 - Arnold for Cinema 4D

9 June 2025

C4DtoA 4.8.2.1 uses Arnold 7.4.2.1 and is a bugfix release. For the full list of features in C4DtoA 4.8.2, see the C4DtoA 4.8.2 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-15719 - Crash when triplanar.smooth_before_displacement is passed to displacement
ARNOLD-16065 - Multipart render fails because parts do not have unique names
ARNOLD-16157 - Lights in moved procedurals instances are not properly moved
ARNOLD-16203 - Failures and crashes when rendering to exr in append mode
ARNOLD-16234 - Crash when rebuilding an instanced object
ARNOLD-16253 - Publishing compounds with custom arnold nodes does not render
ARNOLD-16289 - Updated the metadata for the density, roundness, width_edge, height_edge, and ramp parameters of the light blocker shader
ARNOLD-16299 - Ensure that a procedural's bounding box is computed after all child nodes are updated
ARNOLD-16301 - Improve clarity of GPU error messages when CUDA fails to load
ARNOLD-16344 - Incorrect scene unit conversions when processing procedurals in procedural cache
ARNOLD-16347 - Crash when using an invalid filename on an instanced procedural
usd#2296 - Proper support of stats mode in the render delegate
usd#2303 - Improve detection of hidden primitives that should be skipped
usd#2309 - Fix recent conflict between primitives visibility and purpose
usd#2313 - Arnold primvars aren't taken into account for ArnoldProceduralCustom primitives in usd

Windows 10 or later, with the Visual Studio 2019 redistributable.
Linux with at least glibc 2.17 and libstdc++ 4.8.5 (gcc 4.8.5). This is equivalent to RHEL/CentOS 7.
macOS 10.13 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 560.35.03 or higher drivers.
- On Windows, we recommend 560.76 or higher drivers.
Intel OIDN GPU support is limited to:
- MacOS
  - Apple native CPUs (M1 and newer)
- Windows
  - Intel Xe dedicated and integrated GPUs
  - NVIDIA GPUs using Turing or newer architectures
  - AMD GPUs with RDNA2 (Navi 21 only) and RDNA3 (Navi 3x) architectures