Spectralayers One just completely stopped working in Cubase 13

I unmixed some vocals, cut it into pieces, moved them around and now suddenly my track is quiet and doesn’t show any audio info inside the spectralayers window:

I removed the file from the pool, re-imported it and even renamed it but now I am stuck with a bunch of “ghost” files/tracks inside spectralayers. This is super weird.

The original file can’t be re-imported.
The renamed, re-imported file can’t be edited at all.

After a restart of Cubase, Spectralayers is greyed out:

I was happy that Spectralayers was working so well now in C13 and was considering upgrading to the full version - but it seems I was mistaken.

Same thing with me…SpectralLayers is now greyed out gone in the Editor.