I have PSE4 on my Mac and am going bonkers. I've been working more with files from other people who have full photoshop and they tend to send me files that have layers 'grouped' into folders that I cannot open at all, making these files impossible to work with. It is more then a little aggravating. I've been trying to research an answer but cannot find it. Is there a version of PSE that I need to upgrade to that will allow me to work with these grouped files or is it PS only? For the life of me I have tried to find an answer and cannot find a strait one anywhere.