Current Status: I am finishing up my first application and I have two custom file types: 1) .jdi is the input/output file for a set of strings that scale my lithography patterns 2) .jdisf is an input/output file for a set of scale factors that I scale the original .jdi files with The .icns files were imported into the Resources group in Xcode with "copy files" to the directory selected. I attached an image of the "Properties" section of my Target info. Problem: I would like to have custom icons for each filetype, but I can only get one at a time to work. i.e. I can set the .jdi file icon but the .jdisf doesn't change or visa versa Question: - is it possible to assign different icons to different custom filetypes? - if so, how? Thanks in advance.