HI, there. I've recently installed Kontakt version 5.7.3 (R37), and I'm having issues with certain libraries loading as demos. Then when i load it as a VST in Studio One Pro 3.5.5, now only the Kontakt Player loads.
But a few days before the unlocked version was loading. Now I tried to uninstall and this is very strange. I deleted all entries in the registry as well as on the local disk. There is still an icon on my desktop, and it actually loads as the unlocked version of Kontakt. I'm running Windows 10 Pro. Thanks.....

 

well i am running 5.7.3 on win 10 pro with no issues, i think i had R2R version before they changed to the keygen method, but all i did was copy the .exe and .dll`s to kontakt folder, all libs are activated and i have alot of libs, i heard other people with the same issue as you , not really sure as to the solution tho soz