Yes, I am having trouble with the link as well. It seems to be unavailable. Does anyone know of a mirror?
I just tried it again and it seems to be fine. I logged in to place my first post, and it worked after that. You may need to be logged in to download the zip file.
I am getting the same error as you Garth. It appears that after clicking ok through the invalid argument errors, there are several ArcHyrdo features missing from each menu. I image the toolbar will work, just not those sub tools. Too bad the install didn't come with an install readme file....
I have installed ArcHydro and like some other friends I keep getting this message saying "5, Invalid procedure call or argument" basically when I run "catchment Polygon Processing". All other commands prior to Catchment Polygon Processing are working properly but not the mentioned one.
Could anyone-one help me on this?