System.Runtime.InteropServices.COMException (0x8004005): Error HRESULT E_Fail has been returned from a call to a COM component.
at ESRI.ArcGIS.Geoprocessing.GeoProcessorClass.GetEnvironmentValue(String environmentName)
at HECGeoHMS9.GenerateProject.UpdateAHD(String rasterLocation, String vectorLocation, String ahProjName)
http://forums.arcgis.com/threads/8274-ArcHydro-in-ArcGIS-10?p=35289#post35289
ftp.esri.com
login: RiverHydraulics
password: river.1114