Maya 2026 crashes in batch mode when exporting poses from PoseWrangler

Development Character & Animation
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(This is a translation of a [Japanese [Content removed] by Shimojima Yusuke.)

I would like to ask a question about a tool published by Epic Games on Fab.

When exporting poses from PoseWrangler in Maya 2026 (Windows 11), Maya running in batch mode crashes after completing pose export, and the crash report window appears.

I have identified the portion of the code causing the crash in my environment, so that I am currently using the following temporary modification:

\PoseDriverConnect\python\epic_pose_wrangler\v2\extensions\pose_exporter\batch.py

- 189: os._exit(0)

+ 189: cmds.quit(ec=0, f=True)

Would it be possible for you to confirm whether this change would cause any issues?

Also, as this might be an environment-specific issue, would it be possible for you to verify this?

Thank you.

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再現手順
(1) Launch Maya 2026 (Windows 11).

(2) Open a scene with an RBF solver set up (the solver settings were created using PoseWrangler in Maya 2024).

(3) Open the PoseWrangler tool.

(4) Specify the FBX output location in PoseExporter’s ExportDir.

(5) Press the Export button and set the JSON output destination.

(6) The process starts.

(7) After the solver FBX is exported, the black window closes and the crash report window appears.

(8) If there are multiple solvers, the crash occurs for each export.

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Hey there,

That is a reasonable adjustment and is a good idea. os.quit is intended for hard quitting on hangs, and cmds.quit is the correct call for gracefully quitting Maya. I’m reaching out the team to determine if we’ll make this a permanent change.

Dustin

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