ExtractByMask answered me "parameters are not valid"

[ShufanZHANG]

Hi,
    I am going to Extract an area of a TIFF Raster image, using an shapfile by ArcEngine9.3 and Visual Studio2008.

    The following is the code:

      geoprocessor gp = new geoprocessor();
      gp.OverwriteOutput = true;
      ExtractByMask cutTool = new ExtractByMask();
      cutTool.inraster = @"D:\raster.tif";
      cutTool.in_mask_data = @"D:\beijing.shp";
      cutTool.outraster = @"D:\pd.tif";
      IGeoProgressorResult result = (IGeoProgressorResult)gp.Execute(cutTool,null);

     the "result" is null, "gp.GetMessage(2)" tells me "parameters are not valid".

[ShufanZHANG]

Hi,
   it is resolved. in ArcEngine 9.3, click the AxlicenseControl with right mouse button, choose attribute, check Arcinfo and spatial analyst. then it works. In ArcEngine 9.2, this is not needed.