I am getting the following error while executing the Longest Flow Path for Catchments in Arc Hydro Tools. The tool requires a catchment shapefile which is in float and other file is flow direction (not in float). Both of these files were created using the HEC and ArcHydro tools.
Any way to solve this problem?
System.Runtime.InteropServices.COMException (ox80041098): ERROR 010236: Error in building VAT. ERROR 010067: Error in executing grid expression at ESRI.ARCGIS>GeoAnalyst.RasterCOnversionOpClass.ToRasterDataset(IGeoDataset dataset, String rasterFormat, IWorkspace pWorkspace, String name) at ESRI.APWR.ApHydro.ArcHydroOp.LongestFlowPathforCatchment(ApLayers aplayers, Int32 debug, ITrackCancel& trackcancel, IGPMessages&messages, Strings& exMessage) in CBuilds\9s]ArcHydroTools\src\ApHydroOp.vb:line 68183