Matte Assist Ml Render Failure Mocha Pro Verified -

This is a technical support write‑up addressing the error “Matte Assist ML Render Failure” when using Mocha Pro (verified/licensed version) within a host application like Adobe After Effects, Foundry Nuke, or Silhouette.

3.7 Full Reset of Mocha Pro

• Rename the preferences folder:
  • Windows: %APPDATA%\BorisFX\MochaPro\ → MochaPro_old
  • macOS: ~/Library/Preferences/BorisFX/MochaPro/
• Launch Mocha Pro and re‑activate license.

1. Issue Summary

Error Message: Matte Assist ML Render Failure
Affected Software: Mocha Pro (standalone or plug‑in) – verified/paid license
Common Host Apps: After Effects, Nuke, Premiere Pro, Silhouette, Fusion
Feature: Matte Assist ML (machine learning based rotoscoping / masking tool) matte assist ml render failure mocha pro verified

The error typically appears when:

• Generating or rendering a ML‑based matte inside the Matte Assist module.
• The render process starts, then stops immediately or after a few frames.
• The user has a valid, activated license (not a trial or watermark version).

5. Insufficient Disk Space for Temporary ML Cache

Matte Assist writes temporary ML model data to disk. If your system drive is full, it fails silently. This is a technical support write‑up addressing the

Fix:

• Free at least 20–50 GB of space on your OS drive (where temp files live).
• In Mocha Pro Preferences, set a custom cache folder to a fast SSD with ample space.

Troubleshooting Guide: Resolving "Matte Assist ML Render Failure" in Mocha Pro (Verified Fixes)

Last Updated: October 2024
Applies To: Mocha Pro 2023, 2024, and 2025 (Plug-in & Standalone) | Adobe After Effects | Foundry Nuke | Blackmagic Fusion Rename the preferences folder: