I have download the service pack two. I have activated the extension and I have correctly entered my geoprocessing environment. I have used some of the tools in ArcGIS 10 desktop successfully but this was my first time using the spatial analyst tools in ArcGIS 10. I was trying to create a hillshade and slope from a dem but it failed with both. The dem is in a geodatabase and I set the geodatabase as my workspace and tried to create the hillshade, in the geodatabase (failed). I then tried to create the hilshade in a folder, outside of the geodatabase (failed). I then tried a new name for the hillshade, rather than the default (failed). I tried re-downloading the dem, in case it was a corrupt file and then creating a hillshade (failed). I tried removing the dem from the geodatabase and putting it in a folder then creating a hilshade in the the folder (failed). I think this is a spatial analyst tool extention problem not a corrupt data problem, especially since this is a class assignment and others using the same data haven't had this problem. Also the errors I am getting are syntax errors. The only thing that I changed is the output file (name and location) all other values were default values. I then tried slope and had the same errors. Error codes: 010328(syntax error at or near new symbol NEW LINE) and 010267 (syntax error in parsing grid expression). I am not using script or code just the standard tool.