Native Access was taking forever to install Traktor Pro 4, as part of my new MX2 bundle. I therefore located the executable in the files dropped by Native Access and installed it using the .EXE file.
Now, NA refuses to spot the Traktor installation, and whatever I do (uninstall NA, reinstall, log out, log in…) it won't let me install other packages even if I do not queue Traktor in the downloader. It takes precedence over other packages I would love to install.