Melodyne Weirdness

I have a registered version of Melodyne Editor 2.  I've never had problems with it, but now I have one project which won't recognize the license.
 
I can start new projects and insert Melodyne region FX; I can open older projects and do the same.  They all work just fine.  It's just this one project that doesn't want to recognize Melodyne Editor.  I even get the popup that would usually say the product is unlicensed--but in my case it shows that it's actually licensed.  It just won't recognize it.  It's a project that I've been working on for a few weeks now. It's definitely from the Sonar Platinum days, but pre-Kingston.
 
I did do a complete rebuild after upgrading to Windows 10 last week.  The other projects I've tested from before the rebuild work with Melodyne just fine.  I did NOT install the Melodyne Essentials version that comes with Sonar Platinum.
 
Any ideas?
 
 
Gigabyte ZX-UD3H-B3
Intel Core i7-3770K
16GBs RAM
Windows 10 Enterprise
Sonar Platinum (Kingston Update 1 21.10.0.32)
 
 

I had the same problem, where Sonar Plat would crash if Melodyne were invoked, after an upgrade to Editor 2.
A tech at Celemony suggested that I remove and reinstall Melodyne, Sonar, and Windows 10.
Well, doing so, I was able to run Melodyne in standalone mode, but not in Sonar. Yes, I did rescan the VSTs after each effort. What work, was when I ran SPLAT in administartive mode, even though I am the administrator of my machine. Works fine now. Hope this works for you.
Wolf