Error in executing grid expression

[MichaelBrady]

Hi,

I'm working with HEC GeoHMS. I'm attempting to run the "longest flowpath" tool. I select two grids: flow direction and raw dem and the subbasins feature class.

When I select OK, I get the following message:
[INDENT]"Error HRESULT E_FAIL has been returned from a call to a COM Component." [/INDENT]

When I attempt to run the tool again, I get the following message:
[INDENT]"ERROR 010067: Error in Executing Grid Expression". [/INDENT]

I've attached the error messages as a Word file.

Does anyone know why I might be getting these error messages? I'd appreciate any help with this.

Mike

[JeffreyTilton]

I received  a 010029 error followed by 010067.  I went into ApUtilities>Set target locations, and found that some of the raster data locations were set to the vector data folders.  I rectified this and it ran.

Jeff