I have been using OpenOffice for word processing for two years with my MacBook Pro, now running Mountain Lion. Yesterday some file got corrupted in the program and I finally uninstalled the application and went to their web site to download it fresh. My computer won't open it now because it says it is from an unknown source. I can change my setting in Privacy options to allow from anywhere, but I don't want to leave that set that way. I never had a problem opening this program before. How do I make an exception for this program so I can use it again? All my work in done there. Thanks.