So I've got Kontakt 6 and some time ago I updated Analog dreams, Ethereal Earth and Hybrid keys to the latest versions. Then I found out those versions (2.1.1) are for kontakt 7.
I found a topic where is explained that I need to reinstall the previous version (2.0.3) and NI moderator provided a link to some zip files with the mentioned versions (here the link to the topic https://community.native-instruments.com/discussion/17039/previous-versions-of-recently-updated-kontakt-libraries-compatibility-with-k6-older-libraries#latest . I installed them in the same path where they always have been (an external hard disk) and they figure in Native Access as always.
Now I open kontakt player and these 3 instruments are disappeared in the libraries section. They don't appear in the libraries option tab either. I updated the search path for libraries and samples. I can find the instruments in the file section but when I load them they don't work, kontakt says is a demo version, and yet they don't make any sound.
At some point kontakt says that the product was not registered. So I go in my profile, find the registration number, put it in native access, had the confirmation of the registered product, restarted cubase... nothing happened.
Don't know what to do other than this...