The most likely cause for this problem is inputs with negative values. The combinatorial tools require that input rasters have all positive cell values. The other possible cause is exceeding the supported maximum value ranges for the inputs. The sum of the bit depths of the input rasters cannot exceed 32 bits. The result of this is the maximum values of both input rasters must be 65,535 or less (maximum 16-bit value range) each, or up to 16,777,215 (24-bit range) for one input provided the other is 255 or less (8-bit range).
- Ensure that both inputs have positive cell values.
- Ensure that the maximum cell values for both inputs are within the acceptable ranges.