I recently started playing Warband again and figured I'd update it to play some of the more recent mods (I'm on v1.134), so I downloaded the updater that says you can update from any version past 1.1 to the latest, thinking okay cool that will save me some time (90mb vs 587mb).
Download finishes, I run the program and simply tells me "You do not have Warband installed, please go download the full game from our website" (essentially). Well what is probably true is that I don't have Warband registry keys entered in Windows registry. But that really isn't important since I can run the game fine and even play multiplayer. Considering the registry keys only tell the updater where the game directory is... if you'd have included a basic browse button I could have updated immediately, and not have had to download another 600mb and install the game again for no reason.
I realize this might seem a bit whiny, especially considering that 600mb doesn't take me long anyway. But consider the people for whom that is not true. People in rural areas, or who have a generally bad internet connection. Lots of people have limited download capacity (at least here in Australia) as well which is a factor. All of which would be avoided if the updater adhered to pretty basic standards. Keep your automatic registry search, it is convenient, but add a 'browse to game directory' option if it can't find it in registry. This is something that almost all updaters already do for other games/programs and I was unpleasantly surprised to find it missing in this case.