I have been sent a zipped folder containing files in a geodatabase format. To view them in ArcMap I've created a new file outside ArcCatalog with the extension .gdb and copied the unzipped files into this new file. Outside ArcGIS I can see all the files are present but when I try to preview in ArcCatalog there are no files in the new folder. I've also tried to 'Add data' in ArcMap but still nothing and I've also tried doing the whole copy and paste thing from within ArcCatalog but still no joy. Can someone help please?? What am I doing wrong?