Issue: Unhandled Exception During Rendering
Encountering an “unhandled exception” message during rendering can be frustrating. This guide will help you understand the causes and solutions.
Causes and Solutions:
The specific wording in the message box may vary based on where the error occurs within the rendering process. Here are several potential reasons for this message:
- Insufficient RAM – This is a common culprit. See the section below on excessive memory usage for more details.
- CPU Overheating or RAM Defects – With modern processors, high clock speeds can sometimes lead to this issue. Symptoms include random crashes during rendering, and these crashes can be hard to differentiate from software bugs. Using CPU temperature monitoring software and checking RAM for defects may help determine if the problem lies in hardware or software.
- Motion Blur Issues – Problems often arise when motion-blurred objects are dependent on each other. A workaround is to hide the original object and use a copy for rendering.
- 3ds Max Skylight Usage – Using the native 3ds Max Skylight light type, either alone or as part of the Daylight system, can cause problems. Switching to V-Ray’s environment settings for skylight effects often resolves the issue.
- Plugin Incompatibilities – If you suspect a plugin compatibility issue, it’s a good idea to notify both Chaos Group Support and the plugin vendor. Keep in mind that the issue might be caused by the plugin itself, especially if it was designed for the default scanline renderer.
- V-Ray Bugs – If you believe the problem is with V-Ray itself, try to identify specific triggers (such as a certain object, material, or effect). Then, send the file c:vraylog.txt as well as the 3ds Max scene to Chaos Group Support.
Here are some related articles:
Transparency for Opacity maps using Arnold Standard Surface shaders does not work in the Viewport in 3ds Max
3ds Max 2020 crashes immediately when rendering with Octane renderer
Mirrored parts of a linked Revit model are scattered in 3ds Max scene
Source: Chaos Group