Hi, I am working with ArcGIS 10.0 sp5, ArcHydro Tools 2.1.0.103 and HEC-GeoHMS 10.0.0.95, in a 64 bit system with Windows 7. If I run Preprocessing|Fill Sinks from the GeoHMS toolbar I receive the following error: "System.Runtime.InteropServices.COMException (0x80041098): ERROR 010007: Too many arguments. ERROR 010299: Incorrect # of arguments. ERROR 010067: Error in executing grid expression. em ESRI.ArcGIS.SpatialAnalyst.RasterHydrologyOpClass.Fill(IGeoDataset surfaceRaster, Object& zLimit) em ESRI.APWR.ApHydro.ArcHydroOp.FillSinks(ApLayers& aplayers, Boolean useIsSink, Boolean fillAll, Double fillLimit, ITrackCancel trackCancel, IGPMessage messages, String& exMessage) Failed to execute (FillSinks)." But if I run Terrain Preprocessing|DEM Manipulation|Fill Sinks from the ArcHydro toolbar everything works fine! Can someone please tell me what's wrong? Thank you. Paulo
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