problem occur in using spatial analyst tool

Discussion created by bhavnapardhi on Jun 6, 2013
Latest reply on Jun 7, 2013 by JSwain-esristaff
Hi i m bhavna using Arcgis 9 version 9.3, archydro 9 and HECgeo-HMS 5.0. when i was using spatial analyst tool to reclassify the land use data, as i click on unique Arcmap automatically closed.
i can't understand why this happened please help me.