I am using HEC-GeoHMS 10.7, ArcHYDRO 10.7, and ArcMAP 10.7.1. I keep receiving an error every time I perform the Longest Flow Path under characteristics in the HEC-GeoHMS toolbar. The error message is as follows, Executing: LongestFlowpath RawDEM Fdr Subbasin1 "E:\0-0001\GEO HEC PROCESSING 10.77\SunsetLAKE\SunsetLAKE.gdb\SunsetLAKE\LongestFlowPath1" Creating zone raster from drainage area polygons Computing flow length Computing maximum flow length LogicalOp ConditionOp -49602 Error in ComputeLongestFlowPath System.Runtime.InteropServices.COMException (0x80041098): ERROR 010429: Error in GRID IO: RMPValidate: Invalid Remap data are entered near record 2 and 3 .. Unable to initialize reclass table ERROR 010067: Error in executing grid expression. at ESRI.ArcGIS.SpatialAnalyst.RasterConditionalOpClass.SetNull(IGeoDataset ConditionalRaster, IGeoDataset FalseRaster) at ESRI.APWR.ApHydro.ArcHydroOp.ComputeLongestFlowpath(ApLayers apLayers, Int32 debug, ITrackCancel& trackcancel, IGPMessages& messages, String& exMessage, IRaster costRaster) in C:\Builds\9\s\ArcHydroTools\src\ApHydro\ArcHydroOp.vb:line 49581 System.Runtime.InteropServices.COMException (0x80041098): ERROR 010429: Error in GRID IO: RMPValidate: Invalid Remap data are entered near record 2 and 3 .. Unable to initialize reclass table ERROR 010067: Error in executing grid expression. at ESRI.ArcGIS.SpatialAnalyst.RasterConditionalOpClass.SetNull(IGeoDataset ConditionalRaster, IGeoDataset FalseRaster) at ESRI.APWR.ApHydro.ArcHydroOp.ComputeLongestFlowpath(ApLayers apLayers, Int32 debug, ITrackCancel& trackcancel, IGPMessages& messages, String& exMessage, IRaster costRaster) in C:\Builds\9\s\ArcHydroTools\src\ApHydro\ArcHydroOp.vb:line 49581 Failed to execute (LongestFlowpath). Errors: 010067 010429 My coordinate system is "WGS 1984 UTM 14N". The coordinate systems are the same for all layers. I first inserted the .tiff and projected the raster to the WGS 1984 UTM 14 coord. system. Then I changed the coordinate system in data frame properties to the same coord. system. If further data is needed please let me know. Thank you
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