I'm a complete novice to GIS and just began an Introductory course. I am having an issue when I try to access the
Symbology tab on a layer. Specifically, when I click on the '
Categories' field and '
Unique Values' subfield,
ArcMap crashes and comes up with a report window to send to ESRI. The message is
ArcGIS for Desktop has encountered a serious application error and is unable to continue.
What could be the problem?