I've had the same issue too now for a couple of months.
I've spoken at length with VSL regarding this, and have bought a new e licenser key from them just in case my old one (only about 18 months old) was faulty.
I tried everything to fix it, as it only effects VE Pro 7, neither VI Pro or the Synchron player appear to be effected with this bug.
it only started to happen once i updated my imac to Catalina.
All i do now is open logic (or Sibelius where i do almost everything) open an instance of any sample player i like (VI or Synchron) then close everything down, then start VE PRo and all is good to go.
Yes its a bit of a pain...but takes all of 10 seconds to sort so for me its not really an issue. I only contatced VSL as sometime it appears that my elicenser dongle has been wiped of every license...and i have a lot of VSL stuff..so that was a worry.
i hope you find a fix soon that works for you mate