I wanted to find out if you have used the latest version of HEC-GeoHMS 10.0.0.85. I previously had Arc Hydro 126.96.36.199 and had to uninstall it as HEC-GeoHMS 10.0.0.85 wants Arc Hydro 188.8.131.52. Once I had uninstalled Arc Hydro 184.108.40.206, I was able to install HEC-GeoHMS and ArcHydro. I've come accross two problems, the first is that if you add HEC-GeoHMS toolbox to ArcCatalog Toolbox it crashes ArcCatalog and the only way to get ArcCatalog to open without crashing is to delete the Normal.gxt. The second problem that I've found is that if you run Adjoint Catchment from the toolbox or within ModelBuilder the output is always empty. Just wondering if you have come across the following.
That would be ftp://RiverHydraulics:firstname.lastname@example.org/ArcHydro/Setup10.1/ from a web browser.
Far more efficient to use an FTP client (FileZilla perhaps) with these login credentials:
As provided for the initial ArcHydro 2.0.x version here: http://forums.arcgis.com/threads/8274-ArcHydro-in-ArcGIS-10?p=35289&viewfull=1#post35289[/INDENT]