I am having having trouble running ExtractValuesToPoints on a remote server machine running ArcGIS Server (with ArcInfo and Spatial Analyst installed). It fails and throws a standard COM error. I have checked for any obvious issues with inputs/outputs and it runs just fine on several desktop machines running ArcGIS 10 Desktop (with ArcInfo and Spatial Analyst).
The interesting thing is the Spatial Analyst tool Con works just fine in a previous geoprocessing step, which leads me to believe that it's not a licensing issue. I have even tested the inputs/outputs on the remote machine using the ArcGIS UI and it completes.
I apologize for the vagueness of the question, but I really can't seem to find any reason for one spatial analyst tool to work and another not (other than obvious issues with the data). I'd be happy to fill in any gaps if more information is needed. I guess I'm looking for a list of things I should be checking that I may have glanced over.