I am using ArcGIS ver 9.3 and ArcHydro 1.3. I have a problem when Archydro computes Local Parameters. I get a message "Parameters extraction completed with erros". Any suggestions to solve this?? The parameters I want to compute are: 1) Relief of the basins, 2) Average Slope, 3) Average height, 4) Density, 5) and frequency.