I've tried to share a psd file however the preview will not show up in creative cloud assets under the activity tab. It only shows a blank page icon. Although, you can view the file in the extract tab. However, this is a problem because I need to be able to share the file with the client to be able to view and comment on it, and be able to switch between past and current versions. Right now they are not able to do that. I am using Libraries as well and have smart objects placed from my Library.