1. Reset 3ds Max to Default Settings
- Backup Preferences:
- Before resetting, back up your custom scripts, user presets, and plugin configurations.
- Reset to Default:
- Close 3ds Max.
- Navigate to the folder:
C:\Users\[Your Username]\AppData\Local\Autodesk\3dsMax\[Version]\[Language]
Rename the folder (e.g., append _backup). - Restart 3ds Max. It will recreate the default settings.
2. Verify V-Ray Plugin Installation
- Uninstall and reinstall V-Ray:
- Go to Control Panel > Programs and Features and uninstall V-Ray.
- Reinstall the correct version compatible with your 3ds Max version.
- Ensure you download the plugin directly from the Chaos website to avoid mismatched versions.
3. Check for Conflicting Scripts or Plugins
- A script or plugin may have altered the core files of 3ds Max:
- Navigate to:
C:\Users\[Your Username]\AppData\Local\Autodesk\3dsMax\[Version]\Plugins
or
C:\Program Files\Autodesk\3ds Max [Version]\Plugins - Temporarily remove non-default plugins or scripts.
- Restart 3ds Max and test importing 3D files.
4. Inspect the Imported Files
- The issue could also relate to the specific 3D files:
- Try importing a different, verified 3D file.
- Use File > Import > Merge instead of direct importing to test.
5. Perform a Clean Reinstall of 3ds Max
- Fully uninstall 3ds Max:
- Use the Autodesk Uninstaller tool to ensure all components, including registry keys, are removed.
- Manually delete leftover folders from these directories:
- C:\Program Files\Autodesk\3ds Max
- C:\Users\[Your Username]\AppData\Local\Autodesk\3dsMax
- C:\Users\[Your Username]\AppData\Roaming\Autodesk\3dsMax
- Reinstall 3ds Max and avoid adding presets or plugins initially to test if the issue persists.
6. Update Graphics Drivers
- Ensure your GPU drivers are up to date. Compatibility issues can occasionally cause instability.
7. Verify System Requirements
- Ensure your system meets the requirements for your version of 3ds Max and V-Ray.