I do not remember if I add this Topology Errors extension or toolbox to my ArcMap.
I would like to know more about this toolbox.
This is not the same as the Topology toolbox that comes with the ArcMap
Export Topology Errors can be found here http://arcscripts.esri.com/details.asp?dbid=15535:
Instances will arise when Topology Error information will need to be shared with a user who does not have access to the Topology. Shape, feature class and Exception information all need to be shared. The Export Errors sample can be used to export Topology Errors and optionally, Exceptions, to Shapefile, Personal or File Geodatabase format. Errors can be exported based on three criteria; shape, Topology Rule type or Topoloy Rule.