I have a series of 6 DEM files that are in .JP2 format. In fact, they are the SRTM Shaded relief that was downloaded via the ESRI CD that came with our software several years ago. When I add the .jp2 files to any MXD, some show up as all black while others show up fine. I have tried adjusting the symbology and calculated statistics on the blacked out files o match the files that are displaying correctly, all with no luck. Several others have tried opening these files and get the same result. However, when I add the file to Global Mapper, they all work fine; so I know the data is still contained in the .JP2 file. Any ideas on how to get these files to cooperate with ArcGIS? I'm running ArcGIS for Desktop Advanced 10.2. Any help would be greatly appreciated.