Yeah I know. But there are some positives - there are some early libraries that aren’t loading in K5 for me. If it once worked in a template, it should always work no matter what NI do to new versions, so long as you keep the original one(s) installed.
All that said, it looks like NI are changing tack now. As you say, its now called Kontakt.dll not Kontakt 6, so looks like from here on it will overwrite the previous version.