Missing files after restarting Nuendo and SL

SpectraLayers
1

Nuendo 14.0.40 + SpectraLayers 12.0.30 (Win10/11)

I use “Unmix Noisy Speech” → “Make Extension Permanent” and everything is fine, but when I reopen the session, some of the files are missing.

I also tried “Unmix Noisy Speech” → “Make Extension Permanent” → “Bounce Selection”, but without success…

For now I have reverted to SpectraLayers 12.0.10, but here the GPU processing does not work …

Any ideas?

Thanks!