#8446 Subprocess Error: cannot import name 'TensorSpec' from 'safetensors._safetensors_rust' (C:\win-pyvideotrans-v4.17\_inter

Core cause: This is not a Qwen3-TTS model problem but a broken/mixed safetensors runtime inside the _internal folder. The bundled transformers (5.x) requires safetensors >= 0.8.0 which exports TensorSpec, but the safetensors\_safetensors_rust.cp310-win_amd64.pyd actually present in your directory is an older build. This typically happens when the program folder was overwritten by a patch package on top of an older copy (only sp.exe replaced, or a mix of old/new _internal files), or when files were quarantined by antivirus.

Solution:

1. Delete the whole folder C:\win-pyvideotrans-v4.17\_internal\safetensors (and search the entire _internal folder for any __pycache__ folder, delete all of them).
2. Re-download the full package (about 2.7GB), not the ~260MB patch package, extract it completely into a brand-new empty folder with a short English-only path, e.g. D:\pyVideoTrans, then run sp.exe from there. Do not overwrite an old directory piece by piece — the full package must be used because the patch package contains no Python runtime.
3. Before running, add the new folder to the trusted whitelist of Windows Defender/other security software, and run with administrator privileges, to avoid .pyd/.dll files being blocked or quarantined again.
4. Verify the version shown in the top-left corner is v4.17, then retry Qwen3-TTS. If you only need dubbing to continue in the meantime, switch TTS Service to Edge-TTS (Free).

If the same TensorSpec error still appears after a clean full-package extraction, provide the last ~30 lines of the latest logs/YYYYMMDD.log file in the software directory.

Please refer to the related documentation:

• Windows version download
• FAQ (upgrade/version-mismatch and module-too-old errors)
• Qwen3-TTS channel