I am using Adobe 5.1, and I spent like 6 hours on this School project I have to have in one day....I went to restart the computer before transfering to tape, and it said error cannot save error -20...So i restarted the comp., and went to open it and it said, this file was made with a newer version of adobe what do i do....it wont let me open it help please ill be your best freind forever.....!!!!!! email me at abstrakt44@cs.com or just reply