This problem happens with Apple Mail, when I click the paperclip icon - the subdirectory appears but I cannot open any folders. I also cannot adjust the view (list, icons, etc). I can attach entire folders, but that's not what I want to do (I want to attach individual files). I know I can drag and drop files, but that's not how I like to work. Furthermore, I also have this problem when using web-based email providers (hotmail, gmail) AND when trying to send files through Facebook's messaging system. The drag-and-drop option does not apply here.
This has been happening for the past couple of days.
I know I'm not the first person to have encountered this problem - a number of users have reported the same issue. But so far, I haven't come across any fixes. Any help would be appreciated.