Studio One can only see the demo version of Redux

I installed the demo of Redux in 2015 and forgot about it (sorry) but yesterday I bought a license and downloaded and installed a new version. Studio One can’t see it. It just shows the redux_demo version (but won’t run it, because it doesn’t exist on the computer any more.) No amount of rescanning, resetting blacklists etc works. The new Redux shows up just fine in Samplitude. It’s probably a Studio One issue, but I’ve got hundreds of VSTs and never encountered this before. Any ideas?

Quit S1, remove redux from vst dir. Start S1 again, do a scan. Now quit S1 again, put back redux to vst and start/scan again. does it work?

Yes. Thank you.