Hi Leslie,
Thanks for your reply. I've downloaded the latest version but installed it not yet. Completely uninstalling would remove the Nitro PDF printer driver from my system as well. But this printer is set as my standard printer for AutoCAD where a lot of drawing layouts are connected to. This would cause to a lot of work, adjusting a new printer. This is quit different to other "normal" programs.
You should change back your update procedure to automatic in-program updates. Completely uninstalling followed by re-installing the new version is not user-friendly.