Cannot add shapefiles

Discussion created by magatr0n on Apr 21, 2011
Latest reply on Apr 21, 2011 by rleclair-esristaff
I cannot add shapefiles through Add Data, Arc Catelog or drag/drop method.  I've checked the files, and they are associated with ArcMap, so I don't konw why they aren't opening.  Any ideas on why the icons appear this way and why I can't add??