Foundry NukeX won't start

Topaz Video Bugs and Issues
1

When I start NukeX this is the error I get:

NukeX 17.0v2, 64 bit, built Apr  8 2026.
Copyright (c) 2026 The Foundry Visionmongers Ltd.  All Rights Reserved.

load failed on plugin com.TopazLabs.VideoAI.Enhance.

2026-04-27 16:14:23 29144  INFO: Initializing Video AI: 2.0.25
2026-04-27 16:14:23 29144  INFO:  Creating file fetcher for: https://video-models.topazlabs.com REMOTE DIR: /
2026-04-27 16:14:23 29144  INFO:  AIEngine mode: Normal 3.8.18
2026-04-27 16:14:23 29144  INFO:  model dir path from env TVAI_MODEL_DIR and TVAI_MODEL_DATA_DIR C:\ProgramData\Topaz Labs LLC\Topaz Video\models\C:\ProgramData\Topaz Labs LLC\Topaz Video\models
2026-04-27 16:14:23 29144  INFO:  ModelManager: setting modeldirPath: C:\ProgramData\Topaz Labs LLC\Topaz Video\models
2026-04-27 16:14:23 29144  INFO:  File Fetcher setting localDirPath to C:\ProgramData\Topaz Labs LLC\Topaz Video\models
2026-04-27 16:14:23 29144  WARNING:  ModelManager: Ignoring model: C:\ProgramData\Topaz Labs LLC\Topaz Video\models\aaa-10.json
2026-04-27 16:14:23 29144  WARNING:  ModelManager: Ignoring model: C:\ProgramData\Topaz Labs LLC\Topaz Video\models\astra.json
2026-04-27 16:14:23 29144  WARNING:  ModelManager: Ignoring model: C:\ProgramData\Topaz Labs LLC\Topaz Video\models\astrafast.json
2026-04-27 16:14:23 29144  WARNING:  ModelManager: Ignoring model: C:\ProgramData\Topaz Labs LLC\Topaz Video\models\astrahq.json
2026-04-27 16:14:23 29144  WARNING:  ModelManager: Ignoring model: C:\ProgramData\Topaz Labs LLC\Topaz Video\models\astrasharp.json
2026-04-27 16:14:23 29144  WARNING: Checking file “C:\\ProgramData\\Topaz Labs LLC\\Topaz Video\\models\\audio-codecs.json” failed with error Unknown exception
2026-04-27 16:14:23 29144  WARNING:  ModelManager: Ignoring model: C:\ProgramData\Topaz Labs LLC\Topaz Video\models\benchmarks.json
2026-04-27 16:14:23 29144  WARNING: Checking file “C:\\ProgramData\\Topaz Labs LLC\\Topaz Video\\models\\model-recommendation-rules.json” failed with error Unknown exception
2026-04-27 16:14:23 29144  WARNING:  ModelManager: Ignoring model: C:\ProgramData\Topaz Labs LLC\Topaz Video\models\neuroserver.json
2026-04-27 16:14:23 29144  WARNING:  ModelManager: Ignoring model: C:\ProgramData\Topaz Labs LLC\Topaz Video\models\proxy.json
2026-04-27 16:14:23 29144  WARNING:  ModelManager: Ignoring model: C:\ProgramData\Topaz Labs LLC\Topaz Video\models\ref-1.json
2026-04-27 16:14:23 29144  WARNING:  ModelManager: Ignoring model: C:\ProgramData\Topaz Labs LLC\Topaz Video\models\slp-2.5.json
2026-04-27 16:14:23 29144  WARNING:  ModelManager: Ignoring model: C:\ProgramData\Topaz Labs LLC\Topaz Video\models\thm-1.json
2026-04-27 16:14:23 29144  WARNING: Checking file “C:\\ProgramData\\Topaz Labs LLC\\Topaz Video\\models\\video-encoders.json” failed with error Unknown exception
2026-04-27 16:14:23 29144  INFO: Loaded models info map

My env variables in Windows 11 are:

TVAI_MODEL_DATA_DIR=C:\ProgramData\Topaz Labs LLC\Topaz Video\models\
TVAI_MODEL_DIR=C:\ProgramData\Topaz Labs LLC\Topaz Video\models\

And this is other env (this folder is intentionally empty because I want to exclude “C:\Program Files\Common Files\OFX\Plugins“ from loading) for NukeX:

OFX_PLUGIN_PATH=C:\Users\Mario\Desktop\OFX_clean

How can I solve this error? “(Pay attention to double backslash on “Checking file” sections…)

(Plan B: Temporarily move the folder to the desktop –> C:\Program Files\Common Files\OFX\Plugins\Topaz Video.ofx.bundle but it’s not an elegant solution )

PS

TVAI 1.4.0

2

Wouldn’t this query be better directed to NukeX support:

https://support.foundry.com/hc/en-us/articles/24001632809746-Q100706-How-to-disable-OFX-plug-ins-for-Nuke

Have you checked Nuke’s init.py?

3

Uninstall the Topaz Video plugin from the system and then Nuke should launch.

You can do this by uninstalling the full Topaz Video app and then when reinstalling, deselect the plug-in installation from the installer. This will allow you to use Nuke and Topaz Video on your system without issue.

4

Thanks but this is better solution: Foundry NukeX won't start - #2 by alanhusband-677420