Good question, Edriver3…
Unfortunately I’m on Windows, but my guess is there is some consistency to their product behavior on Mac.
If so, I would search your drive for “NLS Startup Preset” and see if anything comes up. I found a Gearspace thread discussing a similar issue but according to someone there it appears Waves plugins put their presets in various locations. (I’m guessing he had multiple versions installed, because I would think Waves would be consistent.)
I don’t think I’m allowed to link directly, but search “Gearspace Where does Waves save its Factory Presets?” and that should get you there, although I don’t know if it will actually be helpful.
One issue though is that apparently after the Lion version of the OS, Apple started hiding the folder where presets are saved. So when you do that search, you need to do a search that includes hidden files.
If you have an active Waves Update Plan I would reach out to support, although they’ll probably tell you to reinstall… And TBH, that might be the first thing you should try.
If you get an answer though be sure to follow up here and I’ll delete this response. But try that search and see – I bet SOMEWHERE the preset is saved on your drive and you can delete it.
That is what fixed it for me, on Windows.
PS. I’m not familiar with how search works on Mac, but on Windows I would need to search for “NLS Startup Preset.*” with a wildcard at the end – because I don’t know what the extension will be on Apple’s OS.
PS #2. Maybe this will help, look here:
System HD > Users > Shared > Waves > Plug-In Settings > Plug-In name
from https://www.waves.com/support/how-to-use-waves-plugin-presets
If it works the way I suspect it does, by default there is no “startup preset” but if it detects one there, it will use it… So look there and see if you have an NLS Startup Preset and delete it.
And again, if (any of) that works – follow up with the specifics so I can clean up this dodgy advice! 