CN Grid Creation

[AnnScholz]

I???m working with HEC-GeoHMS to perform the operation of building a CNGrid.  It is a HMS Project View Utility function.  I performed it successfully about four months ago on my project.  Now I have a new landuse/soil shape file and CNLookUp table for a built out watershed.  I get an APFramework error that says ???Required/MustExist Field: Value is not found ??? CNLookUP???.  I have been over the table enough times to know nothing is missing.
The CN field is generated in the attribute table for the Landuse_Soil file but all the values are zero.  Any suggestions?
FYI - I tried to rebuild the grid that was done successfully last fall and got the same error message.

[WendellTalampas1]

I am new to hec-geohms and my problem is in the generation of the CN grid. I have already the needed input data, e.g. soil-landuse union/integration, lookup table and the "fil" dem. Running these inputs for CN grid would generate a grid with zero (0) values. I would Appreciate any expert advice.

Thank you.

mogiet