Hello there! I'm running OS 10.6.8 and have tried downloading the most current version of Reader as well as version 9. I can download it and start to run it and then I get the message "an internal error has occurred." This is quite frustrating as I've never had this problem before. I can of course see PDF docs in Preview, but for job applications sometimes I have to input information into an actual PDF file and simply can't on my beloved Mac mini!! Any advice would be most appreciated.