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ArcHydro Tools HydroConfig settings

Question asked by NDetenbeck on Aug 17, 2015

I'm trying to set up a project to run the longest flowpath in ArcHydro Tools (under ArcMap 10.1 SP1).  I have created a directory and added the fdr grid and watershed boundary (both in the same projection).  When I try to set the HydroConfig settings either for the application or for the map and I provide the directory name, I get the following error message: