My application gets installed on a clients server and I have no control over the version of N/D that they are operating on, and many Admins refuse to add additional packages such as the openNTF extLib and the Domino API. So I have to dumb my application down to work on 8.5.3 but I am seriously considering changing that and saying it must be 9x. In most cases that I have found it is simply the Admins don't want to venture into any unknown area, and/or they don't like N/D and really want to switch the company to all M$ or some other pet stuff that they understand. Of course if they can keep the N/D in the really old version then they can say but N/D can't do ...... but my pet can so lets switch. They now have a fairly compelling case for making the switch.