Ok I did something stupid. I downloaded the trial of appzapper thinking that I'd actually try to keep my new macbook pro clean and get rid of the "hidden" files associated with other applications. So I downloaded the trial of photoshop cs5 and then zapped it after the trial period was up, and appzapper deleted a bunch of other files associated with adobe. Great, I guess that's what I told it to do. Now, when I try to open pdfs in Safari (to just view in the browser, and not download them), a dialog box opens asking me where adobe reader is because safari can't read the pdf. I can only download the pdf. I looked a little on adobe's website and google, but the adobe website wasn't much help and I could only find an apple memo on how to fix it if you're using windows. So I'm turning to my friends in this forum... What can I do to make it better? Thanks in advance.