Now that it had expired I get to choose between two things: Authorize or Quit.
My programs don't work anymore.
I tried running the install file to see if there was an uninstall there, but no.
I also tried searching my harddrive for anything called "blue", "tubes", "authorize", "bt", "nomad", and all those files are gone. To no use. I also browsed all the different plugin folders in home:library and /library and /application:blabla:plugins

How is this done? I found at least four other threads having this problem, but no solution.

Logical places are in user/library/audio/plug-ins and same folder in the root/library one.

I have checked those, and I just did it again just to be sure. It's not the way to go about it. Thanks though.

Try to search for "factory" too in case…

I'll do some install tomorrow. I'll try… (erk…)

nothing on factory either.

Sorry didn't have time to try and check the thing, doing it soon, promised!

If you are using it with Pro Tools the Plugins would be in Library/Application Support/Digidesign/Plugins folder

i do not use pro tools.
i tried removing interlok, but then my programs say "you need to install something for one of the plugins to work". so i reinstalled the latest ilok, but then the bluetubes auth popped up again, and the program crashes when i click cancel.
everything about native instruments is now gone from my computer.
i also e-mailed then asking how to uninstall a couple of weeks ago, but i got no reply, ofcourse.

ok, i figured it out now!
i had to remove all plugins on my computer starting with the word "FREE". they are part of the bt demo too.