There is a problem with Photoshop CC 2014 using Mac OS 10.9.4. When I modify a tiff file and create and save with an alpha channel, the icon disappears. The file still opens and works but will not show the icon unless saved as Photoshop file. This is a major problem for users in the graphics/fine art business (which most Photoshop users are)as it is most helpful to display individual files in large icon sizes when working with large number of files. You need to fix this ASAP!!!!