No problems here with the update.  Instead of letting the program 
install the update automatically, I suggest downloading version 2.0.2 
manually from the Nisus website.  All you have to do to update is 
quit NWP,  move 2.0.1 outside the Applications folder (assuming you 
want to save it as a backup), and then move 2.0.2 into the 
Applications folder.
-- 

Bob Stern