How do I remove references to missing content files?

another bizarre day with Cubase.
I have 2 instrument sets which cubase when loading, complains that it cannot find the files, or my licenses are expired.
I went into install manager to do a REMOVE, but it complains that it doesn’t find it.
so i exit cubase and run the Library Manager.
the DETAILS section show the .VSTSOUND files, and i went into my FINDER and DO NOT see those files… (actually i see only 4 vstsound files, but i think i have more than 4 sets… but i;m not sure.
but when i click REMOVE in the Manager, it also says it can’t find it.
This is from following the HELP page on the site… but something is amiss (this is the first time in 70 years that I use that word lol)

Can i do this manually and physically delete any references to these instrument sets ?