Is pianoteq.com down? If so it would be an unbelievable coincidence as I just uninstalled Pianoteq (thought maybe this would fix the .dll issue) and now can't access the website to download it again and my gig is in few hours.
Lesson of the day: Do not to take the internet for granted.
http://www.forum-pianoteq.com/viewtopic.php?id=4712
Yes it is down for some people, sorry for that. However you can access it with http://www.pianoteq.fr and you will be able to download it from there. In case you need to activate your copy, choose "manual activation" and replace "pianoteq.com" with "pianoteq.fr" in the url.
Hoppefully everything will be back to normal in a few hours.