No spatial reference exists Minus and Raster Calculator

Discussion created by amahedy on May 5, 2013
Latest reply on May 9, 2013 by JSwain-esristaff
I've been trying to run a difference between two sample bathymetric datasets using either Minus or Raster Calculator. However, I keep getting the following sequence of errors:

For Minus:

ERROR 99999: Error executing function
The table name is invalid.
No spatial reference exists.
ERROR 010302: Unable to create the output raster:  drive:\New_raster
ERROR 010067: Error in executing grid expression.
Failed to execute (Minus)

For RasterCalculator:

ERROR 000539: Error running expression: rcexec() <type 'exceptions.RuntimeError'>: ERROR 010240: Could not save raster dataset to drive:\New_raster

I tried running this process using the rasters as part of file geodatabases and as non-geodatabase tiffs. The projected coordinate systems are the same and the resolution for both is 30 m. Both have a bander number of 1 and are floating point values.