This will load Kontakt 5 full in your DAW and not Kontakt 6 player. Remove the Kontakt 6 plug in from your plugin files and reboot your DAW. When your DAW scans the list of plug ins, it will choose the latest Kontakt 6 plugin. The Kontakt 6 update places a new plug in file into your plug in folders. This is because the Kontakt 6 update installs Kontakt 6 Player to your computer, overwriting Kontakt 5 Full.
These are libraries that load via the files tab of Kontakt. If you have upgraded Kontakt 5 to 6 without paying for the update, you will find that our Non Player Libraries run in DEMO mode.