Welp...I've got my Spectrasonics problems all sorted.  Great!
 
BUT
 
Somehow during all the machinations of that problem the external drive holding ALL my NI & third party Kontakt libraries went south.  In short...it's a brick.
 
No problem, I thought, I'll just get a newer, bigger, faster drive and reinstall from my original Komplete 11 Ultimate drive and my backups on my old DAW.  Tedious, yes.  Painful, a bit.  But no biggie.
 
BUT
 
Turns out that Native Access sees the indicators of all the libraries but, of course, not the libraries themselves so it can only "repair" the non-existent libraries.  Plus there is no uninstall option on NA.  And I can't even uninstall the eleventy jillion libraries one at a time in Win10 because it can't see them either.  Duh.  The installer on my KU11 drive won't install because it sees the descriptors but not the files.  So, as of now, I cannot uninstall and I can't install.  
 
I guess there is probably a way to hack the registry and get rid of all the NI stuff...but I'm loathe to travel that road yet.
 
Any suggestions???

Update:  Using a little trickery I managed to get to a tech on the phone...yes, I really got to talk to a real person at Native Instruments...who'd a thunk it?
 
Anyway after explaining my situation to him and being clearly understood here's the upshot.
 
Even though I've got my Komplete 11 Ultimate original drive with everything on it (and my K10, K9, etc...)  I cannot just reload the libraries from it...or any drive I might have as a backup either.  The libraries have to be "re-mounted" to the new location and the only way to do this is to...wait for it...reinstall each individual library one at a time by letting Native Access download it from the NI website and do a fresh install to the new drive.  Yes...that's right...download each library in Komplete Ultimate 11 one at a time...there is no batch "reinstall all".  So...I should have everything reloaded and ready to go by...say...xmas...or new years.  If I'm lucky.  Sheesh.

Bummer.  I still have 35G of downloads to do to complete my K11U purchase from last fall.
 
 

Well at least there is a solution but OUCH!! I suggest reading War and Peace or the Lord of the Rings trilogy while installing.

Sounds like a komplete pain in the a$$. Why don't they send you a drive with all the stuff on it, even for an extra cost option?
 
 

I had a corrupted NI hard drive.
 
I seem to remember having to go through the various XML manifest files on the disk, finding the relevant download URL's for the installers, creating a temporary web-page so I could "right click->save as" and having to copy them to the right place on the NI hard disk.
 
Unfortunately, I don't recall exactly where everything was.... I do know it wasn't a pleasant experience!

seems like there isn't a painless fix, maybe good info for ni

Yep!  Native Access is both a blessing and a curse.
You used to be able to simply copy over a library... and point Kontakt to it.  Done!
Now, you have to re-download each one.
It makes configuration "simple" for non technical folks and first time installs, but a royal PITA for someone running many large libraries. 
 
#majorstepbackwards

NI needs to add (restore) the ability for Native Access to Add or "relocate" a library.
This used to be done via "Add library" directly in Kontakt.
Having to re-download is a horrible waste of time/resources.

Welp...turns out there is a solution.  And my guy at NI sent it to me.  Although why we went through all that "I'm afraid that's the only solution" stuff in our first couple of phone calls and emails I can't figure.  
 
There's a program that NI has...and he forwarded it to me...that lets you delete programs and libraries from the registry, thereby making them "installable" from Native Access.  And it works.  Only trouble is you have to delete each program or library individually.  And although it only takes about 20 seconds to do that...when you've got eleventy jillion programs and libraries to get through it's a pain...but one well worth enduring.  I've deleted most of what I think I need to...though I'm sure I'll have to go back and do some I've missed...and Native Access is currently installing off the original Komplete 11 Ultimate drive to the new replacement drive.  So far, so good.  I'll keep ya posted.